I agree, SMP is the way to go if you want more speed. I don't know if me and my friends are representative of the average user, but 80% of our computers are at least dual processor, some are quads. All of us have home networks, some only two computers, some (like me) 15-20 machines. In our case, SMP support and support for distributed network rendering would make things a lot faster. As long as you don't spread each frame between threads/machines, it should not require that much rewrite. Just give each render thread/machine a frame to work on. /troberg