How will the changes affect 2011 pecking order?

While following the fabulous silly season, I can't get over the thoughts about next year, especially as this year's championship already looks pretty much over. So many exciting outlooks, so many questions.

Will the ever-improving Ben Spies change current "four aliens" into five? Can he beat them all and win the title?
Can Yamaha stay at the top without Rossi (and how about Burgess?)?
Pedrosa v Stoner at HRC. Who will come out on top? Pretty defining battle for the careers of both riders.
And of course can Rossi "do a Yamaha" at Ducati?

Discuss. :)

It says all over this season that you would discuss about next season when there are 7 races to go in this championship.