from my pov it would be great to have "classic" (phew!) aros distribution. bernd rosch ported some of aros functionality back to os3.x but i dont think it is going any further. then again allthough i have a ppc card in one of my a4000s too, i do not see any advantage in supporting these rare hw. i would rather aim for a wider common denominator and this is 68k.
Then support the kickstart replacement bounties. Apart of the Kickstart Replacement Phase I (no, I have no idea if the bounty is still assigned or is in the process of being relisted as open) is to reactivate AROS-68K branch in the AROS SVN.