I'm with Bloodline on this one, although I want it as much for my MiniMig as for UAE. The OS is the choke point for retro Amiga use and I would like to see that choke point removed.
Heck, waiting for someone to port AROS to 68k is my primary purpose for following AROS. AROS on 68k, could allow for massive legal, free retro gaming both through emulation as well as it's own open hardware platform. I think this would attract developers not just to the 68k port, but to AROS in general.