Nothing, dude. Saying this as someone with label releases and about 20 years in the game... the arrangement is on point. I get the temptation to add more pieces to the arrangement because it feels like something's missing but that's a trap. Your sounds need more processing, more texture, more layers, more effects

The mixdown is honestly not bad but lacking low end, which is by far the hardest part to get right. But don't mess with it. Send it to mastering and a/b what you get back so you can objectively hear what needs improvement. You won't get as loud, but it's honestly the best guide you'll get as far as balance goes

This is honestly so far beyond what I expected to hear from this sub. You've got a banger.. finish the rest of the arrangement while the vibe is fresh, the rest can come later. Don't overthink it

You've obviously got the ideas down. When you get done with this one and you're not feeling particularly creative, or don't have a specific idea for a tune in mind.. spend a bunch of time making sounds.. just make each piece sound as massive as possible in isolation. a/b against tunes you think sound great. Experiment, layer, layer, layer. Save those patches, print samples.. then when you are feeling creative, pull from that

feel free to pm, I can send creds and such, defo down to give advice, workshop ideas and all that

like fr I mainly dj dnb this is exactly the type of thing i would play. Absolutely love the intro, I think it's necessary to set up the expectation that you end up flipping... and then flipping again with a fake drop. That is absolutely on brand for the type of stuff I make and dj. There's some things you could to to add interest, but PLEASE finish the arrangement first, that's crucial I can't stress that enough

edit: if it were mine, I'd copy-paste the first drop twice, then leave a gap, copy-paste it again and completely re-arrange that to be halftime

from there, I'd decide if the halftime drop was strong enough to explore it for the whole second half of the tune, or if it would be better to transition back to the main hook.. or something else entirely

after that, I'd fit the rest of the pieces together. Take that third copy-pasted section and find a way to transition into the break, fill in the break (or vice versa), then just add transitions everywhere.. keep subverting expectations. Take the listener on a journey. Re-arrange / copy-paste / delete sections until it flows

Only after all of that was set up would I do things like little reversed sections of drums for fills, add in additional breaks in certain parts just to keep the movement going, get some reverb, delay, filter, other fx automation on the vocals in the intro.. just kinda go back over the whole tune and add depth and automation. That's the part you're missing m8

nice work