Hope some experts here can help me out:
Here are my priorities:
1. Case customizability (some hotswap keyboards and larger keyboards don't have compatible cases.)
2. Per. key RGB backlighting
3. Any layout, small is probably the best option, just due to it's customizability
4. Larger switch variety, I prefer tealios (not just Cherry MX as other switches feel much smoother)
5. Fully assembled/prebuilt or hotswappable if it fits in other cases nicely.
Some boards I was looking at:
DZ60, Aurora 96, Kira MKB, POK3R.
None of these boards fit everything though, and I hope there is something out there that comes close!