What would be really, really nice is to have a main board that manages power and the firmware/esp32. Then a series of interfaces to plug in multiple chips. Make it modular.

Not sure of the interface, and power limits are a big consideration. Maybe daughter boards could have 2 chips on them. Might be nice to just use some pins so that each daughter board could be segregated with leads, as well.

Been toying with some drawings/designs for such a beast so that we could have nice immersion cooling for it in a compact (-ish) package.