I dunno if its on purpose, but the little vocal chop that you have in the riser is only a 2nd away from the root, which is a little unorthodox. Maybe try a more consonant interval like a 5th or something? Also, the song seems to lose a ton of energy after the riser. The big thing you should be thinking about in a drop isnt so much how it sounds, but how it retains all the energy that you've built up during the riser. I would recommend adding a supersaw chord at the beginning of each bar, or a percussion loop early on. I don't know where you want to go with this track, so these are decisions you would have to make yourself. The wobble is a cool idea, and the rhythmicness that you have going on with it is nice. Hope I was helpful!