So some harebrained scientist comes on here calling himself Dr. Robotnik, and he thinks he can get away with making such demands to the community and enslaving the members? Reality check: Robotnik has not once achieved anything that Sonic and co. cannot follow up with their own victory.
I will try to answer your civil suggestions as best I can, but I'll ignore the useless prattle about robotocization... You are not going to take over the world, the users that would worship you would just as soon follow the next "eggman" to come.
1) Unless you've missed the memo, the old model did not have strong enough treads to support the crawla and considering there's not much left of Greenflower, it was pointless to waste the resources on keeping a gun mounted. All that's important is that they can keep an eye on Sonic for you, don't expect to be able to kill him so far from your base...
2) Once again, this is rather far out from your base. Getting the slimer and submarine from the techno hill base is one thing, but where are you going to get the wrecking ball... You were still enormously fat in the Greenflower boss, and your weapons were still pathetic, so that's accurate enough for me.
3) Apparently you were not quite finished with said "slab" of metal by the time Sonic got there, but realistically... if you blocked off that entrance, Sonic would have found another way in. PS: Don't put much faith in Dr. Wily, he's been defeated more times than even you have.... by some little robot using his own weapons against him!
4) That's not really our fault, you may want to check your ranks of robots again... There used to be more machines guarding the castle, maybe one of your lackeys had other 'plans'. As for the dining room table, I sympathize, but don't you eat at your desk while coming up with eeeevil schemes anyway?
5) Do note that you do need Eggrock to still be functional as a factory/WMD, and besides what are the chances of a small animal passing through the internals of your factory without you knowing? (given your reputation, very likely, but hey!)
As for "out of character", you do have so many personalities that its rather hard to see how to represent you properly... but the hard truth is that nobody really cares how the antagonist feels about his role in the game. I don't recall Bowser being consulted for each Mario game... we appreciate your input, but you're gonna be defeated at the end of the game anyway so just enjoy the ride while it lasts.
Have a nice day, and give my regards to Sonic!