If it truly is the behaviour and ideas of the OS itself that are what made Amiga great then I wish you the best of luck :-D
Building atop the Linux kernel to get around the lack of drivers and other issues sounds like a pretty good idea. Though I think you might still have difficulty with nVidia/Ati drivers occasionally.
Ignore the naysayers and their motives, what matters is that the developers want to try it.
Andy