Too much verb
I think you've got arrangment part down, but everything sounds way too boomy - you've got the reverb set too high for a piece like this. Hip-hop tracks usually don't have much reverb at all, especially not for the bass drums. Imagine someone trying to put lyrics in this piece - it'd be almost impossible to make sense of. Try doing this one again without so much reverb (add just a pinch you are really inclined) - it's really hard to hear for me as is.