The stick is already padhacked with dual 360 pcbs and I’m trying to avoid ripping them out, but the PS360+ IS a solution I had considered, so many thanks. I’ll keep that in mind
I haven’t tried it, but theoretically you could chain together multiple adapters. Like a 360 -> PS2 adapter and then a PS2 -> Dreamcast adapter. It’s likely to introduce some input lag doing that too, but it (theoretically) should work.
If this would let you use a USB keyboard on a DC, maybe it will recognize the 360 controller to some capacity?
(Just reverse the male end of the USB to female if necessary?)