Having listened to "Nebula Square" while actually paying attention, I agree with Repercussion on most counts. And yeah, the song kinda lacks a hook. I usually go solo-happy, but that's probably not a good idea for a song of this length. Maybe a bell-synth solo at around 4:10. Probably won't be hooky enough, though. In addition to a better kick, you could use a better snare/clap. I actually don't mind the kick that much, as it sounds like one of the kicks I used up until fairly recently.
Other comments:
The open-hat is very disco-ish, and it's a lot more organic than everything else in the song. I think you also used plate reverb on it, which gives it an odd ring.
Transition at 1:20 in particular needs work. Breakdown also needs some work. It doesn't quite flow (maybe due to the echo on the crash cymbal throwing off my sense of rhythm). You might consider holding a bass note on some pad going into it.
By the way, I like the pitch-shifted snare rolls.
I'll listen to your others more closely soon, and I'll see if there's one I want to remix.
