Layout layers are the future. Mapping more than three keys per finger is unergonomic. You want to switch between layers quickly with modifier keys actuated by your thumb. With this approach you can ergonomically access 204 symbols (34 (pads) * 3 (layers) * 2 (shift)) with 34 keys.

Heck even three pads per finger is too much imo and I need to devote more research into two pad per finger layouts which rely on multi-pad press combos (stenography) to avoid using the bottom row and pinkies.

Till then you'll probably catch me using MTGAP 30 on an ANSI.