I don't believe there is a non-starting QB in the league that could come in and win us enough games this year to make the playoffs, aside from Kevin Glenn... and we know he can't win in the playoffs so I don't think that's a real option. Even good prospects like James Franklin or Brandon Bridge would be a gamble.
Unfortunately if Nichols is done for the year, so are the Bombers unless Streveler or Ross can be that one-in-a-million new QB who actually comes in and has success. Can't recall seeing a raw CFL QB come in and guide their team to the playoffs since Ricky Ray 15 years ago. And he had Maas to help. Sorry everyone, the drought will continue for one more year at least. There is no hope without Nichols.