Decursive is a permanent part of the game.

Decursive has been in service since release. Everyone that plays a healing main uses it. Everyone.

The game has already been designed around Decurse and many other mods. If you want to prevent designing encounters around an addon of this magnitude, then fully incorporate it. Implementing high cost AE cures in its place, at this point, is game breaking. It is faulty logic.

This is a severe punishment to everyone that plays healers and is also expected to cure debuffs. Whether it is in raids or groups isn't relevant.

The type of automation used in decursive is already implemented from other addons, Self Cast is a good example.

Think of all the encounters that have been buffed since release, mainly due to the range of mods that make playing the game less stressful and confusing.

Are we to believe that all of that will be rolled back, now that you decide to exclude legitimate mods people have been using for years? It will never happen and you know it.