If all it can do is internet, audio and video, then most people would rather use their PC or Mac here, or not ?
Most Amiga users want to play games, and if it can't do that either, then what ?
I want to do all the same things I do on my PC and MAC, except recording/mixing. I'll stick to the MAC there. Write, listen to music, trackers, multitrackrecorders, softsynths and samplers, browsing, e-mail, chatting etc. etc. I'd rather do on an Amiga.
I love the Amiga-enviroment, and using it makes me feal good. I get more confident and more creative using the Amiga. To me using an Amiga is like coming home after years abroad.
I haven't had the chance to try OS4, but if it feels like an Amiga I'm happy.