Should we expect to see him make the World Championship team?
You would have to think, while it's amazing that he did so well last year, and if he does so again, and if Hart pans out (which I think he will), I'm guessing Ersson would be trade bait? Because if both are good, I'm sure you can only keep one. Sorry, just always something like this on my mind when you have a log jam for goalies.
The normal pattern is for the backup goalie to spend a couple years starting 25 or so games, then get traded to a team willing to gamble they can start.
So first these kids have to win a backup job before we can worry about a logjam.