It really depends on the final result. My guess is the players and owners will both want to cram in as many games as possible even at the cost of rest days which would benefit player health, another topic that they are discussing.
So a condensed schedule means more back-to-backs so the backups will definitely see more action. Goalie depth will be more important than ever.
In a condensed schedule I wouldn't be surprised to see some teams opt to bring in a top prospect goalie given how often he will play instead of going with a veteran seat-warmer. Two examples that come to mind are Lack in Vancouver and Desjardins (depending on his injury) in Montreal.