I suspect Yamaha will have a great choice of riders for 2011 at the end of this season, like they have a great investment at the moment. Rossi the master, Lorenzo the talented if still accident-prone apprentice, and Spies the likely future king of MotoGP. Yes I rate Ben, no stars and striped parochialism from me - he just seems to have that real belief that marks out champions from Sheene to Schwantz. He is the first to do WSBK Champ in his rookie year isn't he?
At Yamaha, Lorenzo seemed to plateau last year in the second half, maybe a victim of the Rossi psych. Already in testing Spies looks prepared for, at the least, podiums in his rookie year. I expect both to perform very well in 2010, Lorenzo as he recovers, Spies as he learns the craft of electronic traction control and other nasties.
At Ducati, Stoner still looks like the man most likely and with a great team building their efforts around him, and Hayden motivated but resigned to the supporter role, Stoner is equal betting for 2010 champion IMO.
Honda it seems, have a long way back and they have looked as a company to be in some disarray, just look at the pathetic decline of their F1 team. Dani is for that reason, hard to assess, the promising graduate to MotoGP who looked like the successor to Rossi's throne in his first season or so but has since blown hot and more usually, cold.
Suzuki will flatter in winter testing, only to deceive with their lack of serious commitment to the most expensive MC racing endeavour on the planet.
MotoGP faces a serious challenge to their top billing. A WSBK which is now much more attractive to the manufacturers. This attractiveness, and the terribly weak numbers and depth of MotoGP, is the biggest threat to Dorna and their laughable bunch of "Spanish blazer-wearing clowns" (thanks GD!). Bring on the fireworks!