A LOT of people keep saying that multithreading has already been talked about, but doesn't that just mean that it's a GOOD idea? I bet before cars were invented, people kept saying stuff like, "It's way too hard to build a contraption that can replace the horse!!! Only a complete FOOL would try such a thing!!!".
I'll admit that it might be a LOT of work. The results would be worth it, however. To put it this way, how many horses do you see people riding on the freeway?
Just my two cents.