"It's a moba shooter. It's far from mindless. Each class is unique with their own abilities and ultimates. Coordinating all of that to play the objective is fun."
Just to be 'that guy' but this is closer to an arena shooter than a MOBA, I can see the comparison. The reason this differs are that there's no enemy base to defeat, or Nexus. We don't have different lanes of minions to push with and don't level up within the core gameplay mechanics.
Still, I'd be game for an Overwatch league setting if people were wanting to try and set one up.
http://masteroverwatch.com/profile/pc/eu/Amok-2386
This has been me so far, mostly solo-pub play.