Gameplay feedback:
While the Mage is a really unique and fun class, the controls are really bad... people are use to aiming with the mouse and then selecting with M1. Trying to use 1-4 keys instead of M1 just feels weird and hard to get use to without moving the mouse. I suggest that the Mage always has an ability selected(based on which key(1-4) was pressed last) and clicking on someone applies it to them. Also, I think it's a better idea to have to aim at yourself to use spells on yourself. This is so that when you miss a teammate you don't end up wasting your "action bar" on yourself. Additionally, you can make the keys Q&E or Mousewheel to scroll between different spells.
Also Also, Drool warrior still can't use shield while healing and using bubble(s+M2) while healing also causes you to activate uber(at which point you don't use bubble at all).