One must limit definitions somewhere, Oddgrim. Like Essence being a heal on top of normal hps if you wish, AC buffs being healing in the form of less damage (healing the damage according to 1/10 of ac unless capped), evades...
I do not dispute that hots are powerful.
I agree with OP and if it is mechanics that can solve it would it not be to foreign to have the same for hots in my opinion.