Answer to actual technical question: I don't really care about it anymore, it was more or less a proof of concept and to make BPPC boot
(which runs PPC code early in boot)
You need to find someone who wants to work with QEMU or is interested in PPC, sorry.
uaegfx: also not going to happen, OS4 display API is yet another secret and I am not interested in 3D anyway. This is also someone else's problem.