Interesting
I know the importance of listening to a song the whole way through, don't you worry :)
Listening to this, I really liked everything that went into it, and I understand it has more of an ambient kinda feel, like something that you could dance to in a club. But honestly, for me at least, a lot of the power and memorability of a song comes from a catchy, strong lead. And as this song is mostly ambient, it isn't designed for a lead like that(If design is even the right word to use there).
BUT, I imagine all the buildup from the beginning to around 4:48-ish could amount to a pretty powerful lead. I, personally, would drop the repeating note at 4:48, and bring all the percussion you have in and blast in with a crazy multi-voiced, high analog sinewave lead that really makes all the build worth it. THEN you can have the lead that goes on just before 4:48 come out for a few more rounds as it winds down and then commence with the note repeating that you've got going on at 4:48.
Totally would blow my socks off. And then you'd get to watch as I go find them. I live in a desert, that would suck. Sandy shoes are the worst.