Can we have echo in heroes of the storm

What’s wrong with Abby having the same heroic if no one is going to let the player play as abathur. They don’t need to change the abathurs heroic besides like I said nobody has ever welcomed abathur and they see Abby as a throw pick because he’s less durable. Besides you have medivh and deathwing to handle him how is it overpowered to have both cloning heroics if one of them can easily feed a enemy team?