Judging from your other tracks I've listen to, you enjoy a slow build up, starting very sparse. Which is really cool actually! I guess I feel like there's A LOT of mid to high end stuff going on for the first 2 minutes, and very little low mid to lows. I think even just a nice dark verb would add a lot for me. Just give it a smoother, fuller, and warmer body to every thing. I know Kalimba's can be really harsh and tiny, because they're just small tinny pieces of metal. That with the filtered drums just adds up to me wanting just a little bit of something down there. Maybe those background sustained chords could've filled that in if they were louder or eq'd a lil different, dunno. Still great ideas and work! Just some constructive criticism on what I would've personally done different.