I was thinking that the devs could add a basic heal spell for the mage and its sub-classes, But for the healer sub-class it is stronger. The heal spell could maybe heal 5% - 15% of your health and has a cooldown of 10 - 20 seconds (as too not be too overpowered) and can maybe heal allies as well (?), while for the healer sub-class maybe a buffed version of it with a bit of a higher cool down (30 seconds?) while also healing allies.
tl;dr, add a heal spell for mage and its sub-classes while for the healer sub-class is a stronger version.
What do you guys think? Is it too overpowered or could be reasonable?
(this my first suggestion btw :D)