In the longer run, maybe Wine/Darwine will grow to accomodate OUP on non-Intel platforms.
Or maybe someone crazy can rewrite OUP natively for OS X (not something expect right now).
We always have the possibility to author xdeltas for specific versions and distribute those.
(even if cross-level resource management would require some sophisticated xdelta usage)
EDIT: frankly speaking, there might be a way to load aditional classes at runtime.
That would be Daodan-based (so PC-only). There would still be workarounds for the Mac.
Soon(TM)
geyser: There seems to be more of these recently. Now should it have a qualifier? PC only... or can I hope it includes Mac????
]]>FYI: for regular shapeshifting, you can use Shift+F8 to cycle backwards.
If youre on PC, you can use chr_set_class, in scripts or at the Developer Mode console to customize the appearance of enemies after they spawn. No limitation apart from the local availability of the character (and even that is about to change).