I don't think so i will. This solution gonna need some development to be able to sell to peoples. Like sourcing good guality cables (i used some i found in my shop), connectors. I butchered my purion, cut out half of the housing, drilled holes into it, so its slim, easy to fit, i wouldn't sell...
My bike has a gen2 engine, I'm using the old Redped module.
You also have to disassemble the E7000 switch, and solder wires directly to the switches, because it's using the 3 wire resistant switching method originally.
I dissasembled a cheap used (around 50euro) purion,soldered wires directly to the switches on the pcb,and used a shimano E7000 switch for mode selecting,and installed a small switch under the toptube, to power the bike on. I placed the purion inside the frame.
I have a bluetooth capable...