Think about the names I selected. If the Democrats think Bolton is bad, imagine how they'd react to the thought of Rove or Rummy being sent to the UN. IMO, they'd almost race the GOP leadership to get Bolton confirmed.
They'd certainly prefer Bolton to either one of those two guys, although they'd fear Rumsfeld the most, I think.
My guess is that it probably won't be necessary and Bolton will be approved in the next two weeks.
While we're busy here eating our own over the McCain agreement, we should at least realize that the Democrats wouldn't have agreed to it if they thought their filibuster tactics were going to be a winning strategy.