If you feel like Heroes of the Storm is lacking in powerful spellcasters, your reasoning isn’t particularly solid, but you can take heart in knowing that even more powerful casters are on their way. The newest development video shows off Chromie and Medivh; the latter is the archmage who brought the Orcs to Azeroth and then somehow came back from death to serve as a prophet, and the former is able to control time itself and also happens to be a dragon. That’s just plain unfair.
Imagine poor Raynor for a moment. He’s a dude with a gun fighting a time-controlling dragon. How is that balanced? He’s not even getting a keen new outfit, like the upcoming Widowmaker outfit for Nova showed off in the video. Of course, as a player, you don’t need to worry about that; you can just jump on down below and enjoy the video while looking forward to being the one playing aforementioned time-controlling dragon.