We need to dispense with the phrase “team of mavericks.”

Maverick:

1. An unbranded range animal, especially a calf that has become separated from its mother, traditionally considered the property of the first person who brands it.
2. One that refuses to abide by the dictates of or resists adherence to a group; a dissenter.
The definition of “maverick” precludes there being a team of them. McCain/Palin can, without violating semantics, refer to their ticket as a “couple of mavericks.” This might call our attention to what their catch-phrase really means: that they propose serious, independent debate between themselves, and that (according to their maverick natures) they won’t really listen to the others’ advise.
Late Update:
I came across this piece in the Times giving the etymology of “maverick.”  Turns out the Maverick family is none too happy about the word’s late usage.