Vegas has the Jays as 12th best, tied with 3 other teams at 30-1 odds to win WS. Not that great.
There isn't much available, and it does not make sense for Jays to incrementally increase their chances by trading prospects or cost controlled players like Barnes for vets. Now, if the Jays still had EE and were 15-1 odds or something like that, there is merit to such moves.