The synths do sound nice besides the piano which sounds rather fake. Pretty standard trance type stuff from what I hear on here.
The almost buildup part around 2:09 was pretty cheesy in the fact that you find that in way too many electronic songs now a days but you didn't really climax after like you'd expect. Just added a new synth instead which was kind of nice but I would have liked a more defined new section there.
The piano part around 4:20 was a really nice change from the rest of the song. It was the one time I felt like the dynamic changed which was a problem for the song when doing active listening. Everything was nice as background music but I'm not sure how interested I could stay in it while just active listening.
I can't quite pinpoint it but something feels missing. The mix just doesn't sound all the way full to me. Maybe I'm just too used to a sin-type bass underneath things. Not quite sure.