I think something that also needs to be discussed is Dot Damage.

Right now they're sitting about 2x as potent as our filler spell, where IMHO it should be at least 4-5X as potent. Classically, in RPGs and MMO's the point of dots is they're supposed to be cheaper than filler spells and more effective with the tradeoff of having their damage spread out, not upfront.

This isn't really the case in FFXIV. Playing well, you can easily get 8-10 filler casts off (more if you're a WHM with POM). Having a DoT be only 2x the damage of a filler just seems really low to me.