Klingberg could look good with the current system because he'll be sheltered just like Stetcher currently is, but his skill level is much higher than Stetcher's. If he gets out there with whichever of McDavid and Draisaitl is getting the weaker matchup, it could make a significant difference offensively.
However, if that works, then the plan has to be to upgrade on Emberson for the playoffs. You absolutely need to spend that money (and I'm sure they will), because this is very clearly an all-in year.
It would be nice to add a second pairing d and a middle six centre, regardless of how Klingberg looks.