For the organization, yest. However, the players on the ice are playing for pride, jobs next season. It is one thing for a GM to hope they lose. Another for a player to hope they lose or not try to win every game.
I don't understand why an extra 5 minutes of 4-on-4 wasn't an option.
Given the options I would prefer 5 minutes of 3 on 3. I'd like to do whatever option minimizes the appearance of shootouts. Not because the Devils are bad at it, but because I enjoy watching the game more than the shootout.