Critical issues that need to be addressed

[PorxiesRCute]

This can only work with certain abilities, not others. There is no way to "scale" something like Benediction, whose entire existence is based on it being the "oh crud" button giving an instant-cast 100% heal. There is no way to "scale" a tank having a skill granting invulnerability. And good luck making DPS classes equal in usefulness through scaling when one has multiple AoE spells and the other doesn't have any yet.

Benediction is already available at level 49 and it's something like a 3-minute cooldown. How exactly would it break the game to have it available at level 16?