> I thought that endianess is only an issue when exchanging data with
> peripherals, thus a driver only issue

I was (implicitely) referring to the backwards compatibility issue, i.e. running existing m68k (and even PPC?) code transparently on MorphOS/ARM, the same way existing m68k code is transparently running on MorphOS/PPC right now. Such would require an ARM (or any other) CPU to have true big-endian capability.