One thing that irritates me about having MorphOS, AmigaOS, OS4, Windows and wanting a laptop too is having 5 different computers to run the damn things. I just want one box, why do I need 5 different hard drives, 5 CD/DVD drives, 5 floppies, 5 psu's etc?
Th cabling form one computer is a headache for most people - 5 in one room? Forget it.
Let's be realistic - the mass market is not going to ditch Windows or the existing form of easily upgradeable PC in the foreseeable future. Neither am I - most of the software I use will only run under windows.
IF a next-gen Amiga was created as a pci card SBC - incorporating ram slots and any custom chips onto the pci card - using all the other resources (pci, usb, ps/2, parallel) from the host computer this could easily be a realistic upgrade for more than just us geeks.
I believe what Amiga - in this form - needs to sell is just 1 or 2 killer apps. If the app could be bought with the SBC Amiga it could run in ANY pc - no need for expensive hardware, no need to run on x86 (for the purists).
Also - installation and configuration needs to have (at least the option of) easy GUI based front ends, and detailed help files. I would like to retain the option of switching all the bells and whistles off, but for most people the thought of editing a text-based configuration file is terrifying. Put a GUI in front of it showing the options in drop-down menus and it's a lot less daunting.