You may find the game passive but those of us who hanker after arcade style games this is the closest thing we've got to a Powerstone style game in twenty years.
Free aim would add absolutely nothing to this other than giving the melee focused characters a huge advantage. The game is wonderfully balanced as it is. It's not trying to be Smite or Overwatch, Let it be it's own thing.
Would be a fun addition to see an exclusive colour for your character each time you hit a level that's a multiple of ten.
And Daemon has to hop around on one leg and instead of a sword he holds a sausage.
In principle themes are a good idea to keep things fresh. Alongside the character skins they could refresh an already established stage and re-theme that to match too.
The thing you have to remember with Maeve is she has really low health and bad mobility. She's not that great one on one against the majority of the characters. You'll never contest an area objective against the likes of Kulev or Miko. If you have a decent team that know their roles and you have decent footsies then shes deadly. If you have a team of randoms then shes a huge target who has the potential to die in about three seconds.
Buttercup, Yeah a little too strong with really useful tools.
Too many tools and too much health. A one team wrecking ball.
You can't nerf someone who is THE takedown target for the opposition team. He's fragile enough.