The over indulgance on DPS characters. I get it, most of them fit nowhere but DPS, but 2 characters a season, 1 is DPS, DPS is larger than Support and Tank combined. I like Emma, I like Dagger, but I want there to be more in those departments.

Also, not overly fond of how Tank ults are CC, I like in Overwatch how they're generally some of the ones with largest killing potential, it balances out how you have to play babysitter.