I don't see much value in Derrick Rose if Wade and LeBron are there. Not enough touches/drives/shots to go around.
The Bulls would be best off moving Rose for a talented power forward. Perhaps Blake Griffin.
Who would you have as the point then? If they still had Heinrich that would be the perfect situation, but they wouldn't have the money if they kept him.
I don't think they need a star point guard. Better off with a role player at the point and a star at the four. I think that would create better balance. Someone like Steve Blake would be excellent.
If the Bulls were to trade Rose for a point guard, who is a star, Steph Curry would be my first choice. He has the passing instincts and the shooting ability required to make it work.
Another idea, an older point like J-Kidd or C-Billups would also be a good fit for the next couple of years.
Shooter and unselfish (comfortable without the ball). I would rate those two qualities the highest. Then defensive ability and rebounding. Then playmaking ability. Then, lastly, scoring ability.