To the lecacy discussion (if I got everything correct, because my english is too rusty):
Legacy seems to be the best way. Today we have CPUs capable of 0,4 teraflops? And right next to it sits a processor which does 1 teraflop like a charm, idling, eating power for nothing. I'd like to see system, which is fully aware of the capabilities of each part it consists of, to feed each component with tasks, that runs best on them.

to general Nehalem:
Hoping to see Nehalem is not slower in less-threaded games than current wolfdales, if it is, shame on you, Intel. And I like to see lower idle power consumption than equivalent Penryn quad.