It has already been nerfed. With Legion they removed the spell completely from feral, and they nerfed the range from 25 to 20 yards unless you pick balance affinity, which can be punishing vs a lot of comps. 5 yards may not seem like a lot, but it actually makes a huge difference.
It's the one thing that makes Druid the best healer by far since what ? 10-12 seasons ? The versatility of this ability makes druid the best choice for a comp in 2s and makes the class replace others on many comps (see for example RMD)
Saying that Cyclone is the sole reason druids are picked over other healers in a lot of comps isn't true (at least as of now and WoD). In fact, a lot of the highest rated druids don't even rely on Cycloning that much. The reason you pick druids over other healers in a lot of comps (especially dampening comps) is that they have really good survival, mana and healing output. A druid paired with a hybrid allows them to just camp bear with full hots in a lot of scenarios.
Anyway, Cyclone doesn't need a nerf just because it's a unique spell like Nadagast said. If you're gonna start crying about Cyclone, you might as well start crying about spells like Mind Control too.
Edited by Asgarath, 29 December 2016 - 07:28 PM.