Hello!
I'd like to know why people using AOS 3 doesn't jump on the AOS 4 train? What is holding you back exactly? I've been an a4k user myself and wasn't sure when I bought my amigaone but I haven't regret it ever and it really is amiga in every single way but upgraded.
From my point-of-view I don't see much point.
The main things I do with my Amiga are play retro games and watch demos and I also get a kick out of seeing what an old 1200 Amiga can be pushed into doing with a few choice expansions (Eg playing Sam & Max).
I wouldn't get any of the same kind of buzz out of running such retro software on a 'new' OS4 machine and there's really nothing there that interests me much software/hardware/OS.