In this case I'd like to remind people why the changes were made in the first place:
Telekinesis was changed to be much easier to use, you don't have to worry about slowing down to manage what you're gonna throw anymore. If you don't want to break something you can toss it on the floor and it'll slide to a stop.
The slide, and ESPECIALLY the spinjump were removed because they offset Telekinesis entierely. Let me ask you this; why use Silver's ability if you can get away by just jumping on things like with other characters?
Because I still wanted Silver to be able to get something out of slopes, I allowed him to spin by hitting the floor with a boost.
The slide was also removed partially to free out buttons so that Silver could be playable by using only the jump and spin commands.
Mind you, changes have been attempted but I for one don't know if people would even like that compromise.
Silver right now has, in my opinion, the best balance he's ever had, the changes make his gameplay a lot more straightforward and easy to understand for anyone, but is legitimately not even fun to work on anymore on my side given every change is followed by half the people complaining about things such as "Silver is OP in match", "Silver sucks now that slide is gone", "Silver has no voices???????". I know it's impossible to please everyone, but when the complaints are all directed towards bringing back the slide because it makes the character easier to play as, that's where I just give up.
I've recently read through this(remember when the character was in the works) and generally got the problems of it.
Did want to give it a go to further understand the issues and kind of form a own opinion on it.
With that said, I do want to give it from a neutral standpoint and hope it won't sound too bad.
So from what I've heard I can basically summarize the issue from the player side as "Removal of Features" while from the Creator Side it's a "Simplicity" and "I've added stuff to make it simpler, what more do you want?!"
To be completely blunt about it, I feel like you aren't listening enough to the players.
Addressing the two big points of spinjump(not sure when that was a thing) and Slide.
Slide
I've seen that at one point there was no Slide at all, I wonder if you were still able to do that Psycho Boost "Lite Roll"
If not, then the player would've been pretty stumped, as it's not only needed for going under obstacles but breaking walls(something that neither of Silver's abilities can do)
And sorry to say it, but I did find it stupid that the slide was removed without custom levels and other stuff being taken into consideration, not to sound bad but I feel like SRB2 has been through this in 2.0 times(and tbh I hope that we can have slide as a Vanilla SRB2 move one day for nospin characters)
So I'm in for adding Slide back as it serves use for that and could be activated easily, even if it was on a button like Custom 1, that would still not be a far stretch and complexity in my view, but that's of course just my opinion.
Spinjump
Now about Spinjump, and I did try out the game for that.
In short, I don't think that Spinjump is required but I question why you can't attack enemies while floating.
You can use the Psyboost(and, out of convenience, fuck it up for not holding forward :V but I quickly got used to it) but I feel like being able to use it would make the life of players easier.
While Psyboost works, it can often also launch you into stuff that you didn't want to and make you get hit.
(Not sure how people see it, but in general I feel like the intention of getting hit in Sonic Games shows how you fucked something up and now get something silly)
This would be ok if the player actually messed up but it feels like this can easily happen with many things since the boost is horizontal but can be aimed up/down, however at the same time the speed of it makes it harder to aim.
A jump in comparison has gravity which one could get easily used to and then use to hit stuff more precisely, avoiding hits.
I can see if you think that's too close to having a spinjump, but the thing is that while I would've loved to use Boss projectiles, I could never grab and actually use them...
(not sure if that's not easily done due to flags but it would've been hilarious and good to see some stuff, also you can't grab the orbinaut's spike balls either)
So yeah, I think if that gets added(dealing damage while using Float) there's no need for spinjump.
As for Slide, I'd like to see it back and have the Psyboost Roll removed.
Another thing about it is that it feels like a "Pity Roll" which is probably intentional, but look at what fast speeds you're going before you hit the ground and roll(also had that one trigger by accident a few times and in places I didn't want it to)
Since you do want to make Silver able to grab things I'd guess it would need a custom button, still not too bad but that's up to you and the other players to decide on what the thoughts of this are and all.
Sound Effects
This would be the part where I'd like if we were able to add config files for wads and all that so people could have their preferences saved
Generally it would be nice if there was a command to enable sounds locally and one to enable them in MP(which every player themselves would have to set, or maybe set it as enabled by default? Not sure)
Telekinesis Selection
So I missed out on that version and we unfortunately don't have a Version History, but it sounds like it was a bit like the Scottish Resistance in TF2(being able to selectively launch picked up objects, sounds like it was nice to have and in a way I wish that there was a way to still have that(different wads that have one flag changed which changes the control scheme?) However I guess that one won't be coming back, maybe as separate addon only.
Gameplay Review
I can say that he's a pretty fun character to play as.
However, especially the Psyboost, are things that are so good (that they scratch that part of my mind that doesn't allow good to exist) I'd personally maybe even call them a bit overpowered, however I wouldn't be one to nerf them and would prefer fun over having useless or really nerfed down stuff.
Not sure about the Psi Combos but one thing I noticed is that if you hold the key down, as soon as another enemy is in range, Silver will throw it but it won't home, is this intentional?
Also while I get that Silver's supposed to pick up what he sees, I'd like to see that range increased as it felt like I couldn't grab stuff that I should have and felt a bit odd when I jumped in the middle of enemy circles just to grab only the facing ones.
One thing that stuck me as odd were the Shields, I get why you disable Psiboost when having them but I wonder if you should only do that for Whirlwind and Armageddon since those are the only ones with said ability and one could easily be throw out of the flow if one expected to be able to use the ability just for that to happen.
To be honest, I don't really think he needs the shield abilities though as he has a suitable replacement for a Double Jump in most cases, but that might be just me.
What's bothering me though is how you can't use Telekinesis after being hit and flickering, guess that this was done for Multiplayer but I wonder if it can't be set so that you can't grab players in that time but everything else works.
It really sucks when you get hit by a enemy and then can't use that to easily get rid of them while most other characters can do something about them like spin or just jump into them.
So you can't use telekinesis but you can use the overpowered boost? :V /S
Speaking of Enemies, he can't grab some like Minus or those Egg Guards(the Shield ones) how is one supposed to attack them?
I'm assuming by using the Boost, but good luck using that against the Egg Guards...
Bosses were a pain as one could get hit very easily, one would expect to have easy bosses with Silver but apparently not as many things couldn't be picked up as expected.
Glad that I'm not the only one that sees Metal Sonic as a poorly designed boss, he was good for Veteran players but that was about it...
(The concept itself is good, the execution is rather terrible tbh)
One minor thing I noticed is that the Swing... Pulleys, Circles, Ropes, Chains? in CEZ leave Silver in his falling Frames when you hover into them but that seems to be only visual.