The bass definitely add's a lot too bringing the song together, much tighter sounding and really fleshes it out well. If ya wanna take it further, try layering another rhythm track on or something like that.
If not, just adding the bass really improved the song. I like it :-)
I may have already said it once or twice, but here it's worth a special mention. It's hallucinating. Great rythm track, it'll bring the listener to transe. And the solos, never heard anything alike. You really did something great.