Nice piece! If you’ll welcome the reaction, I feel there’s nothing missing at all. Instead, it feels like there’s too much there, or it starts off unusual and unpredictable and becomes less so the more things you add in. Is that cool feedback to suggest? I don’t mean it as a criticism. The opening is just really cool and I wonder if that could be something that’s more focused upon, instead of building up dance layers.
I’m actually most interested in the first 45 seconds before the beat drops in. You have some nice moments there that could loop a few times. This is totally subjective, but have you tried looping the phrase at 30seconds-45seconds twice (right up to before the bass drops in) and then maybe jumping to the awesome ending at 4:25? That’d be kind of asynchronous and weird. It’d be shorter but kind of odd.
The first 45 seconds are extremely interesting and unpredictable. I kind of find my ears predicting what’s going to happen next from that point on — Except for the great ending you have there.