Make barrier a choise aswell
How about barrierer now gives lets say damage reduction instead of a shield. It feels like as long as both barrier and heal gives a fix number, The one with the highest will alwsys be picked.
New effects: gives 25 - 50 percent damage reduction for 2 seconds
Thought that maybe now mages can get this
The numbers are just an example and can be changed, but my point is to make barrier more of an anti-burst spell. Just for pure defence. Another reason heal is picked over barrier is the fact that heal has also utility packed in like movement speed and heal on your ally.
With the upcoming assasin-rework i felt like why shouldn't barrier be an alternative as a defence summoner spell for mages and adc's. Just my two cents :)