I'm wondering: if we exclude the fact that it's opened (that's already huge, yes), can be fixed and improved by anyone, and is portable, what are the benefits of running AROS instead of original AOS on 68k hardware? It seems most AROS developers don't seem to be that interested in seeing it run correctly (ie: at least on par with original AOS on 68k hardware) but why would they? What's the motivation? What would it bring?
for amiga userrs aros brings additional functionalities, like built in usb stack, network stack, rtg support, gallium/mesa, css capable browser, ability to move windows off screen, a number of contributions, apps and games, capable of running on 68k. aros basically runs on every system without patching and reconfiguration, which allows to have centralized effort in improvement, everybody may contribute to according to his abilities, instead wasting time on multiple concurrent and uncoordinated projects. the goal is that you can download aros and just run in on whatever amiga hardware you own or under uae without spending weeks to set up the system to your satisfaction. i know for many this is a pleasure itself to fiddle with it, but it may be redirected to common effort that results in amiga characteristic easiness of use and plug and play abilities that have been long lost unfortunately. also aros kickstart aims at mutual compatibility with the 1.x - 3.x range as far as it can be done, so genuinely incompatible amiga applications can be run side by side. as far as i know it provides also improved posix compliance, that allows easier porting without ixemul library, which still remains an option though.
aros devs are taking aos compatibility serious as i said, but it is not their priority to have perfectly working hardware drivers for each and every amiga system out there. except perhaps for toni. but without testing, cooperation on the part of the (potential) users and educated bug reports they certainly are left with nothing. im sorry, if you want to see aros as upgrade alternative to aos, its your move now.