Another Sega 6-button to CD-32 adapter attempt...

Hello all, was thinking about my Sega controllers having 6 buttons, and only being able to use 2 of them. There was a hack in the adoom readme on how to use all 6 buttons, but that only worked in adoom. I found the pinouts of both the Amiga and Sega controller ports, and it looks like Amiga does some wierd light pen thing on the same pin that sega uses for voltage, and Sega uses some strange "toggle switch" processor to add an extra 3 buttons. I was wondering if it would be possible to of course rewire the voltage/grounds to proper lines, then set up some sort of transistor to remap the 4 "missing" buttons to CD-32 standards when the "Select" setting is on?