Doing leveling roulettes and MSQ with SCH I realised your Energy Drain stays at 100 potency through out the lower levels.

I don't know why I figured it would start at lower potency and update into higher potencies as you level, but nope. The moment you get it its 100 potency forever.

It has this strange effect of becoming weaker as you level. At level 50 your Ruin is 150 potency and your ED is 100 potency, meaning weaving your ED in is a huge gain in DPS, almost another nuke's worth. Then as you level that ability gets weaker and weaker comparatively, which its not what you want an ability to feel. You don't want your Job to feel weaker as you level.