You don't think that the Habs will prefer to have a back-up just in case ?
Gratton is coming back soon. That should be enough. No point in disrupting things in Hamilton when a number of guys seem to be finding their groove. I say save the callups until we really need them or until we manage to dump some of our dead weight towards the end of the season.
When a team enters the playoffs the roster limit expands for the team. I'm not sure by how many players but I know its at least a couple.
You are right on that point, every playofff team can call up some of their minor leaguers for depth. I asked the question because you created doubt when you said that Balej might be called up if the Habs are still in the playoff hunt. He might be called up if the Habs actually are in the playoffs, not just contending for a spot, because the roster limit holds until the end of the regular season.