Reply to looking for some feedback on a track i'm working on

I've been working on this track recently, and I'm looking for some criticism by my peers so I thought I'd ask here. A little ambient piece, made a few changes since i bounced down this edition(changed all synths and reverbs to high quality), but i just keep believeing it lacks something but i dont know what it is.

http://soundcloud.com/petewoods/pacific

thanks!