I'd like to see Lars paired with someone else eventually. IMO he's not that far from being similar to Greene in his abilty to elevate his partner, and even now, if he plays with somebody decent like Schlemko, that frees Greene up to work with Severson or Merrill. Of course, that means Severson and Merrill are going to be playing harder minutes, which could be a problem.
I think keeping Larson, Severson, Gelinas and Merrill paired with a vet would help them out more than if they pair any of them together.
As an example I looked at a defensive pairing Toronto did a for a bit with Gardiner and Reiley, and it was fun to watch them with all their energy, however it came at a cost being their defense.
NJ should look at keeping these guys separated for a few years till they mature a bit, and learn from a vet presence on the ice.