Except for the fact that the only reason to nominate Romney is with the hope he's going to attract independents and centrists.
Romney's issue is with the base. Adding a VP candidate who will be more attractive to independents and centrists than to the base just copies the constituency Romney already attracts.
Huntsman would make sense for a VP of a Perry or Cain presidency, not of a Romney one
Like I say, you may be right, however, these Romney positions don't sound very centrist to me:
"Former Massachusetts Gov. Mitt Romney on Saturday continued his attacks on President Barack Obama for announcing the withdrawal of virtually all U.S. troops from Iraq by the end of the year, decrying it as a "sudden change of policy."
Romney Criticizes Obama On Iraq - Politics News Story - WDIV Detroit
"In Pittsburgh yesterday, Mitt Romney told a questioner, “My view is that we don’t know what’s causing climate change on this planet. And the idea of spending trillions and trillions of dollars to try to reduce CO2 emissions is not the right course for us.”
Romney and Climate Change - By Katrina Trinko - The Corner - National Review Online
"Romney has said that he thinks that the Don't ask, don't tell policy is working and he would not change it, especially in the middle of a war, and that "we have much bigger issues as a nation that we ought to be talking about than that policy right now."
"We step into dangerous territory when politicians start eviscerating our fundamental freedoms in the name of amorphous principles, like campaign finance reform."
"Romney wishes to increase the size of the military by at least 100,000 troops."
"Romney has called for an expansion of the Navy that is estimated to cost $40 billion, but has given no firm details on how he would pay for this."
"Romney has opposed ratification of New START, a bilateral nuclear arms reduction treaty between the United States and the Russian Federation,[167] in part because he wishes to deploy defensive missiles on submarines[168]
Romney has written that the "utopian aspiration" of the abolition of nuclear weapons, first put forwards by Ronald Reagan, has undermined America's position in the world."
Political positions of Mitt Romney - Wikipedia, the free encyclopedia