I think Rossi made the right move. To prove himself as a a great rider he needs to win on an inferior machine. Everyone agrees the Honda V5 is the best machine out there and the M1 needs some work.
Interesting article in last weeks Cycle News about Colin Edwards first ride on the Honda in Spain. In one day, first time on the bike, he bested Rossi's best lap time during the Moto GP from previously this year!
and HRC is going to support 4 satellite teams, 8 riders on equal factory stuff (supposedly).
It indeed will be interesting. Rossi is going to have his work cut out. I will be astounded if he repeats as champion, I will be surprised if he even wins more than a couple races.