Launch UC4 on the ps4.
They need to take a small break and examine what made UC2 so good and why UC3 failed to live up. I agree with jett, I think they really tried too hard to make an interactive movie with 3 whereas 2 was just a damn good TPS game with a fun story mixed in and incredible visuals. I played UC2 almost nonstop to the end but I couldn't play UC3 for half an before getting bored.
Well with Golden Abyss having such a huge attatch rate i'd say it's pretty certain PS4 will launch with U4, Sony can't let an opportunity like that pass.