I also think the Cayman should have more power, not as much as the 911 Carrera S though. Maybe the same as the base Carrera would be good. And for all those that say that MR is better than RR, for the most part you're right, but C/D had a feature on a Cayman with the C2S engine and the Cayman's 0-60 was slower that the C2S even though it was lighter. Putting the engine at the rear gives better traction off the line.
And compare the facelift C2S to the R8 on this site. The C2S wins and its cheaper.