Its a decent pack, especially for your first (at least I assume its your first I didn't really check), though it has a lot of problems. For the cyberspace problems, my first one would be the over abundance of invisible walls. Seriously, for every decent shortcut there's an invisible wall: Time save by falling onto the springs? Invisible wall. Monitors extremely close to the path I'm on? Invisible wall. You see what I mean, and the last point transitions perfectly to my next criticism - the monitors / game-play in the distance are distracting. It really messes up the composition when there's game-play in the back of a level, yet you can't go there. I know they're there to spice things up, but it just messes up any resemblance of order. My fix would be to just remove any monitors/rings/end-goals etc. in the background to make it more clear where you're supposed to go, and if you really want them then just make it so you can actually go to them. Still in cyberspace, the level design is a bit boring: a lot of hallway design and just going straight with very little platforming and a lot of automation. and when it does have platforming/obstacles it's way enclosed to be fun due to the levels having so many background details. My tip? remove the background details for more space and add more platforming. There's also a weird cage part in the final cyberspace level where you're supposed to light speed dash, but it just kinda doesn't work.
Onto the open zone, and it isn't bad, but it's very lacking in some areas. For one, the open zone is way too samey - as everything uses pretty much the exact same textures, this makes it hard to tell where you are. While frontiers did also kinda have this problem, it fixed it by having significant landmarks in each splice of the map: like the tower, diamond thing, and Giganto fight in Kronos. This only has one landmark, so I'd add more. While it is somewhat fun to explore, I don't like how there is no reward aside from emeralds. I would put emblems all over the map as mini rewards, so the area is put to good use. I think the trees should be depleted, as it doesn't really look good when a bunch are in a concentrated amount too.
Overall, the maps are decent, but could use a few touch ups and tweaks to be the best it can.