Well honestly I can see any motivation to do that
By your own admission, the amiga as a platform is dead. Why, then, is there any motivation to develop AROS at all? Whatever that motivation is, it is presumably applicable to any hardware that is capable of running it.
AROS for the BPPC could theoretically run a lot faster on my classic machine than AROS for the 680x0. Getting more speed out of the hardware used to be motivation enough for the majority of amiga developers :-)
