My dislike for Salted Earth is more about how ground AoEs work in general. I've had it macro'd since the end of HW. It's mechanic was more tolerable when it had a higher potency but now that it's nuttered it feels like just another button press and not impactful. I was always hopeful SE would do something while you stand in it but since they haven't that's why I say get rid of it.

Your addition is well within the realm of reasonable. I don't know why they didn't do that for this expansion. Pretty much anything would be better than how it is now considering it's high CD. Your could also keep the attack pot the same but cure pot per target fall off. Both of the two alternatives give it utility in single target. I wish this would be addressed in 5.2.