Two major issues arise for me: fullness and development.
Your levels seem fine for the most part, though the lead at 0:48 - 1:02 seems pretty thick and is covering up the details on your C64-esque arp and the meatiness of the bass (you're left with its boominess).
1:04 is missing a transition of some sort; a reverse cymbal perhaps, or a rising sweep, followed by a regular cymbal or sweep. It's already somewhere there, but I can barely hear it. Additionally, it would be nice if the drums changed there (at least the snare) simply because it switched meters to halftime. The clappy snare seems to fit less and less the more I hear it in the halftime context.
The 2:10 fake-out was kinda odd to me, and can be smoother somehow. Also, it might be fairly obvious, but what is with that big hit at 2:51? It's so random. Lastly, the piano portion after 2:10 felt overly long as it is right now (with little development), and can use some textural development or less "plainness" by the time you get to 2:34 or something.
Overall, the weakest portion of this arrangement is easily after 2:10. Lots of what came before that was pretty good already, and isn't quite as problematic. Whatcha got in store for that?