Sara is doing exactly what she should be doing. She is keeping her name in the forefront, attacking the President when the opportunity arises and supporting Republican candidates running in 2010.
I fail to see how she is polarizing. Except for the fact that far left hates her (they will hate anyone right of obama), the wookie suit crowd hates her (anyone who takes the spotlight away from Ron Paul earns their ire) and the woman-can't-lead this country crowd hates her, "she doesn't have enough experience" (like the community organizer does?). She has more experience running something than our current President. There were Republicans in the last election that voted for obama just to have a black President, that little titillation is gone. They realized they acted stupidly.
When/if Sara Palin is elected President, NEWS FLASH, she will not be doing it all by herself. She will appoint advisers and Cabinet member to help her make decisions. It's not a one man operation.
Palin spent 2.5 years governing the least populated state in the country. BHO has spent 1.33 years as POTUS. I think it is fair to say he has more experience governing, or at least that a comparison between them is too close to call (ignoring BHO legislative experience).
Here is how I read your post above:
Palin isn't polarizing because different groups don't like her.
We made a mistake electing BHO (presumably because he is inexperienced) so it's ok to do it again with Palin.
Experience doesn't matter because of the cabinet.
So taking the last one further, has Palin demonstrated the ability to choose advisors?
Was she advised to quit politics as a way to somehow be more qualified to run in 2012? Did she listen to her advisors during the election? Most rumors put that as a "negative."