I feel like Volatile Agony should also be a DoT

Like, I get it that Blizzard don’t want just another Shadow Crash Spriest with Vile Taint situation, and I’m not against refreshing it manually either since we are a DoT manage spec but I think the reward should be worth the trouble. I know that the instant damage is already the reward but it should also apply a dot imo, cause then it also boosts the MR damage and it won’t feel bad to stop spamming it to refresh Agony manually, since it also boosts it’s own damage. Doesn’t need to hit too hard but I think it would be better/cooler.