For working and gaming you have powerful pcs (PC/MAC). If you're just interested in gaming you have powerful consoles (XBOX360, PS3, Wii).
So what makes you think that a new Amiga with lowspec components could be a success ? Just because it's called Amiga ? Please...
The "new Amiga" you put your hopes doesn't even have anything in common with the classic Amigas, except the name of course.
The Amiga-Comeback you hope for will NEVER happen ! And if you look at it realistic you will find NO argument for chances on the mass-market.