Nylander looked dynamic with Malgin
Robertson looked dynamic with Malgin. (just ok/not ready otherwise)
Conclusion: Malgin is riding their coattails while leading the team in goals and points.
I honestly believe that if his name were anything but Malgin, the narrative would be different. He's not dynamic, but then again neither is a Kerfoot. He's a well rounded player who can play with skill players while not being a defensive liability.
The Leafs have been looking for complementary players who can play with stars and provide depth scoring, and Malgin is showing both. That has value. At the World Championships, he far and away led the Swiss in Pts ahead of Timo Meier, Nico Hischier, and Pius Suter - all everyday NHL'ers (and some much better).
IMO, keep Malgin to start the season, send Roberston down, and give Malgin a bit of run in a top-9. Just as easy to punt him in November is it is in preseason. But I suspect injuries will hit, and both might be here playing roles.
I love Robertson and want him up here soon, but him going down for a few weeks won't hurt.