I think people give far too much credence to Rove importance to Bush. Bush is done!
Rove is being kept to reward him for good work and to work for the party!
He means nothing to Bush and everything to the party. it is what he does. He get's people elected by navigating the political rapids. The only other job remaining for him is the library and legacy, which he can do from the outside.
He is now engaged in planing for 06,08, and Bush will not fall down because he may be gone. He has other advisors for day to day office stuff.