In a magical world where the players who dislike the objective modes have their own Deathmatch queue, would a separate MMR for each of the five game modes help to make them all competitive?
The short answer is no, not right now.
With the extreme degree of imbalance we have given that we're in the middle of a major class refresh project there is ZERO way that any MMR or any "matchmaking-wannabe-like-system" could ever deliver "competitively" made teams.
Unfortunately, there's no way to do that, unless, maybe, one were to consider grouping Subclassed players, Werewolf players, & DK players all as one "pool" and then separately grouping all other players into a different pool to matchmake.
There is zero chance of that because that would be a huge demand on the server and a long time to design and implement; and also because the population, at least on PC, is too small to ever have that work. I play on both PC NA and XB NA and I could wait forever to get a BG queue to proc on PC but, on average, I only wait a couple of minutes on XB for a BG queue; and that's consistently. I'm never sitting and waiting for a BG on XB.
Now, this tells us that more players on console play ESO than do on PC. Why that is a trend, that's anyone's guess and I think we all have our theories.
But as for any sort of "balancing" MMR, no, put that on the back burner until at least after the class refreshes are done because this is a waste of time otherwise. It's simply not possible right now with how disheveled everything is.






