Hots is horribly unbalanced, look at any of the overwatch heros. Blizzard made them do everything to well. There is almost no weakness to any of them. (Execpt maybe Zarya ? Chick with the huge laser gun and shields, she is horrible.)

Most of the fan fav heros are just so **** under performing like Tassadar, Thrall, Raynor (Though he is finally since launch getting a rework tuesday prob) The Lost Vikings....

Blizzard also has no clue how to deal with the troll population, and just lets them constantly ruin games without any one from the dev team even TRYING to address it.