Sage was pitched as the "DPS" healer. What if instead of addersgall generating over time, the gauge built as you dealt damage? Like for every cast of dosis/toxicon/phlegma it filled the gauge by like 1/5? Then they could have abilities or cooldowns interact with how quickly damaging spells built the gauge. Haven't thought this through but it just occurred to me as I was browsing and thought it could be neat.