2012 election question I haven't seen discussed much

I have seen the Republican candidates discussed from hell to breakfast. What I haven't seen is this:

If you were the Democrats, would you keep Joe Biden for VP nominee in 2012? If not, who would you nominate instead?

Note that you do not actually have to be a Democrat in this question. Just answer as though your aims were what you think their aims are. (If you think their aims are the spread of international Communism, I reserve the right to mock, though.)