patch 2.0.10 notes on the PTR

[Concillian]

Turning the question around, why would a raid leader bring a Feral druid if his tanking is less than/equal to the warriors', his DPS is less than the warriors' (a fact assuming his innervate, rebirths or healing is required at some point), and he would heal more as a Restoration druid and still provide both innervates and rebirths?

Because there are more raiding moments where the utility (innervate and rebirth) are significantly more advantageous than the DPS.

- an innervate + shifting to heal 3-4 heal spells may prolong the encounter substantially such that you can afford to lose the DPS
- a rebirth of a single dead DPS member more than makes up any DPS difference between the two.

Things go wrong.
When they do, a druid has a lot more tricks to help the raid recover from a mistake. Theoretically, if things go perfect, maybe a DPS warrior is better. In actuality an equally geared for DPS feral druid offers about as much as a DPS warrior plus some tricks in case something goes wrong (and something often does).

Lets pull a scenario from BWL:
Your guild is on it's 3rd attempt of Chrommie in the first night of serious attempts.
Things are going well and it is looking like a succesful attempt might happen...
A priest who hasn't fully learned the order of importance for debuffing has been consistently a little slow in debuffing the debuffers compared to the DPS in the DPS cubby and all the shaman and/or druids designated for poison removal are running low on mana.
An innervate here drastically increases your chance of success if your raid can manage getting one to be put on the proper person. Depending on the timing, it may even be able to be done with no interruption of DPS given the in-and-out nature of the fight.

Not all boss fights are fights where DPS are 100% of the time on the primary target DPSing.