Also second guessing what i said there. There probably is a safe limit of voltage at some point here. A short circuit to your feet could literally mean death at these voltages. Not just injury.
This makes things simpler in terms of power goal but also more complex in terms of wanting a single jet design. If we keep the 50v safety limit with the 100a heat limit you have a solid 5000w limitation per drive. If you want a 10kw board you’d NEED two jets and wiring(battery) that’s cool with 200a loads.