I had an idea that gave me a bit of a laugh the other day. I found it funny because obviously it would never happen because of contracts / potential injuries etc.
Once you have eliminated a team from the playoffs, you can shanghai one of their players and put him in your lineup. So by round four you have three extra players.
Your blue line took a beating last couple of games? No problem grab their best D-man.
Goalie looked shaky in that round? Non issue, take theirs.
From Chicago I think it would be a toss up between Toews / Kane / Sharp. Maybe Duncan Keith?
From Nashville it would unquestionably be Rinne.