Starting the year with Smart could really get Rondo's competitive juices flowing. No one wants to get shown up by a rook, and it seems like Smart is a terrific competitor. I wouldn't be surprised if RR steps up his intensity into training camp and beyond. He probably hit the gym at 4 AM today.
Best case scenario, Rondo comes back in the first half of next year at or above his previous best, with Smart showing great promise as the 3rd guard. We'd hit the trade deadline with a much more valuable asset in Rondo - or attraction for other stars - than we have right now.
For better or worse, Rondo seems to often respond best when faced with competitive pressure. We're not going to be a contender, so that's not much motivation, but facing competition from within the roster might have the same effect.