To get you an idea how stupid it is to expect them to nerf all spells, this was more than 2 months ago:
Ofc ppl with no motherfcking idea what they are talking about started crying over Battle Fatigue so they removed it almost instantly.(https://twitter.com/...511304151273473) 2 months, since then there was no change to healing that is worth mentioning. Nothing.(making outhealing 4 ppl with Bloodlust as a Warlock 4v1 into normal 2v1 I don't call nerf, let alone fix) Now you expect what exactly? Nerf all spells in what, less than 3 weeks? So if you still haven't got the idea what this is, is that you either get BF or hf with this healing.
Battle fatige isnt the way to fix it, moron. Yes, you can go through and NERF all of the pure DPS class and hybrid healing 1 by fucking 1. Nerf Spirit bond... Nerf selfless healer. NERF THE HELL OUT OF hotw. Nerf death strike and all DK healing abilities. Nerf healing surge for anthing other than Rsham. etc. It can be done and it can be done quite easily. The only thing preventing it is laziness.
OR, you could reintroduce Battle fatigue BUT have it only apply to specs that arnet PURE healers.. So any hybrid spec gets reduced healing.. As of right now, its not the heals coming from healers thats OP its the fact that a feral, a ret, or a hunter even, can do 2/3 of my healing as a disc priest in an arena game.
Blizzard started introducing self healing to DPS classes in cata when the pace of the game quickened.. Now that they have slowed it down, they forgot to take those things out, because they shouldnt be needed anymore.