In a way, yes its starting to look that way. Kunitz was probably the better overall player in his prime even before he got to play with Sid, but so far its hard to argue that he has been the best fit with McDavid. He just plain old produces when they're together. Always seems to know exactly what he needs to do and where he needs to be.
The reason I said this McFly is that a player like Maroon will most likely benefit in that role. much like Kunitz. Their production went way up being sidled next to the best player in the world. These are limited players who if they do the one thing they are supposed to can benefit greatly.
On the Ebs front tho I see it like this.
One of the best fits for Crosby has been Hornqvist. But just cuz he plays with Crosby doesn't mean his production doubles or triples. He still is a creator and can carry himself w/ or w/out Crosby.
Same as Ebs. He is a 60-70 point player. Just cuz he plays w/ McD is not gonna change that much, nor is he not a failure cuz he doesn't exceed that.
Crosby couldn't even make Malkin a 150 point player his wing(brief time).
Players like Ebs who can carry themselves are not the ones who benefit from these types of players. Guys like Maroon do however