Why does riot nerf soraka until shes unplayable?

Morello stated multiple times that a dedicated healer cannot be allowed to simply deny damage, since otherwise her job is roughly to remove the enemy's fun.

So what they're trying to do is keep her dedicated healer role, while removing her dedicated healer gameplay. Her S4 tweaks are pointed toward that way, with a bigger, shorter Armor buff and more frequent healing if you're actually commiting to offense.

Yes, as ploki122 said, morello fundamentally disagrees with the sustain healer paradigm for lol. Here is one of the many threads where he's detailed this:

http://forums.na.leagueoflegends.com/board/showthread.php?p=26453416#26453416

The good news is they're revamping some support things for season 4! Such as utility scaling with ap (i.e., the armor buff with here heal would scale with ap instead of the heal, or maybe just less scale on the heal). So soraka should get to a better place this season.

Hey, Kirby. I was wondering what you'd think of the changes I proposed for her here:

http://community.na.leagueoflegends.com/c/balance/fH0iAVda-soraka-rework

I agree, I don't see why they had to hit her with the nerf bat again, it's going to start leaving brain damage.

she is very playable right now