What would be great, and I'm not sure this is technically possible, is for Xena to be setup to provide all the functions of the OCS or AGA chipset on boot up and some technical solution to allow access to real 3.5" disks.
The above two things in conjunction with 68k emulation would make a nice compatibility solution IMO
For the record I think my Amiga 2000 says "A2000" on the front....will have to check one day as it's dead so up in the attic.