If these have already been mentioned just delete my post (sorry if they are)
1. Needs an easy to use Minimap.
I was playing Rook and because of his size I was zoomed out a decent ammount and never had any idea where my teammates were. I know saying things should be more dota-like is a no no but dota does have an exceptional mini-map with easy to read colors.
2. Moving camera with mouse
Maybe I'm not realizing something (PLEASE tell me if I am because it's annoying) but I'm having to move the camera with the arrow keys, then switch over to WASD grip for skills. Just makes it really difficult for the game to flow. A simple fix to this is moving the camera when the mouse touches the edges of the screen.
3. Targeting people is HARD
I was playing as torchy and trying to fireball somone with 300 hp left, and it would NOT do it. I'm not stupid I promise some was off.
other than that it's really fun and addictive! keep up the good work.
Edit: [Idea] just played another game, and it seems a little silly that the mist can cover up Rook. Hes such a strong hero maybe one of his disadvantages could be that he can be seen through fog.