The level is gorgeous aesthetically, but suffers terribly at scaling consistency. We have some well spaced rooms and others, absurdly undersized.
* The Aerial Garden-like room could very well be enlarged 100%. Paths should have, in my opinion, 512 FU wide.
* Teleporters could be 200% bigger.
* The stair near Sector #349 needs to be enlarged 200%
* It would be nicer if you remove the Gradient Ceiling from the stair near Sector 464.
hmmm, try this:
http://ezerarch.uuuq.com/files/ssz-somethingmore.zip
EDIT:
Other "things":
* No blind deathpits, please: deathpits must be large enough to be seen. Sometimes I confuse whether what I'm seeing is just a step/small rift or a deathpit. The stair near Sector #405 tricked me. X.x
* The west-most room is crowded with enemies.
* Your level made me remind my Miscellaneous Trip Zone: more than one theme in one level. It's possible to blend themes at once, but your level needs a better transition between themes... or else, try to follow a theme consistency.