Rossi has way too many "man friends" for my liking..
Seriously though, I think Casey will be in the box seat next season. He's getting a bike that seems fast out of the box, and he's not going to have to waste his time trying to drag a basket case up the grid every other week. His current team mate is a world champion and he can't get anywhere near him on the same bike. I think we'll see just how quick Stoner really is.
Rossi will take at least a season to get the Ducati sorted. It will be difficult for him initially.
From watching the odd interview with Ducati staff, you get the distinct impression they are really going to miss Stoner. The Italian public might love the concept of Rossi & Ducati, and it will bring in big sponsorship bucks, but I don't think the team are 100% sold on the idea.