I dont know if it is usefull, but great Genesis emu - gens is now open source. (sources availiable here). Because so far there were only one gen emu sources availiable (Generator), maybe sources of Gens will speed up releasing of genesis emu for GP32
Well, not necessarily... it just means its more likely (less needing to work out how to emulate stuff, just to port etc.) Could still take ages though.