I know Medivia was based on a version UH was king, but making the other options more viable wouldn't hurt that.
The image shows a comparison between each healing based on a LV 100 mage with 60 ML
Right now, using anything other than UH (spell or rune) is almost a joke unless you are very low level.
Light healing consumes ~31% of the mana to only get ~8% of the healing compared to UH
Intense healing consumes ~43% of the mana to only get ~15% of the healing compared to UH
For mages and arches intense healing should be a decent option to heal a good portion of their life, since they have lower health pool, but right now that same mage example would heal ~27% of their health when using IH
Archers are worse where they will heal only about ~9% of their total health with IH