1. I believe we'll see diminishing returns on performance to visual impact. I mean, does "The Increibles" impress people like "Toy Story" did? I suspect Half Life 2 is the apex of the performance to visual-quality ratio. Going forward you may need something like a 100x the performance increase to get a 10x increase in visual quality.
2. Revolution won't look like that... for obvious, top-secret, reasons.