The limiting factor in Kreider-Zibanejad isn't the lack of a RW, it's that Kreider and Zibanejad aren't really good together 5v5.
Zib-Buchnevich worked, Laf-Zib worked. Kreider-Chytil has worked and even Kreider-Strome, despite being a high event fest was a pairing that worked in our favor.
Kreider-Tro-Blais may even be an interesting line tbh. He's got a decent amount of time in the top 6 for St. Louis and was pretty effective there and Trocheck 100% plays a Blais friendly style. Kreider can too, but hes gotten further and further away from it as time has gone on.
They shouldn't do this unless they have to.
They've been a pretty dominant trio since being put together and really should be deployed more, not broken up and sprinkled around other lines that won't be as effective as they are collectively. No one should have a problem with them staying together, they need to figure out the other scoring lines and hope that Panarin doesn't suck this season.