One of the more intriguing decisions for Kyle Dubas in the coming days could be whether to add goaltending depth. If only the Maple Leafs general manager could peer into a crystal ball and learn that the health of Jack Campbell won’t be an issue for the next several weeks. In that case, there would be little argument that could be made against giving Campbell the lion’s share of the Leafs starts. And Dubas wouldn’t have to give anything up to acquire another goalie, even if it’s a draft pick, prior to the National Hockey League trade deadline on Monday at 3 p.m. What was clear, as the Leafs travelled home from Calgary on Tuesday in advance of playing host to the Montreal Canadiens on Wednesday, is that what’s happening with Campbell in net couldn’t be working out much better. Days off between starts have allowed the netminder to properly manage a lower-body problem, and when Campbell is in the crease again, it will be with an eye to setting a Leafs record.