Common core functionality:
- Hot-swap 4x12 Ortho
- RP2040, 4 MB flash
- USB type C
- Full per key RGB
- Optional encoders on all four corners
- Optional 1x2u & 2x2u layout
Option 1:
- North-facing keys
- Fits existing JJ40/BM40 cases
Option 2:
- South-facing keys
- Needs dedicated case design (possibly USB daughterboard)
Option 3:
- South-facing keys, compromise on the two top row keys by the USB connector.
- Fits existing JJ40/BM40 cases
Function over form. I vote option 3.