I prefer 68k because

[kolla]

FPGAs are getting bigger and cheaper all the time

[kolla]

You can run AROS hosted on a custom Linux setup and have best of both worlds. In fact, that is exactly what AEROS is

http://www.aeros-os.org/

[kolla]

You have missunderstood, and it seems your familiarity with AmigaOS in general is limited too :p

The files you are looking for are in MOSSYS:

MorphOS uses assigns to keep the OS directories away from where users and programs drop files, so for example C: is assigned to SYS:C and MOSSYS:C, where the latter contains all commands and SYS:C is where user installs his own commands. The advantage is that one can easily update MOSSYS: without messing with user installed files.