I hope Resistance 3 has extra dev time. I was a huge fan of the original, not so much of the second. It wasn't a bad game, but it paled in comparison to the first (campaign wise) in every single way.
The multiplayer was a great touch, I'd like to see them build on that more.
Also, the graphics could use an overhaul, maybe KZ2 level graphics for the campaign? :P I can dream, can't I?