I have actually asked for Fire Whirl for shaman in the shaman forums before, it would be amazing and really thematic imo. Its like a fire cyclone, similar to what primalists had in DF. It would probably have to go in the class tree though but it could work like Slicing winds for monk where it went in WWs spec tree potentially, though our spec tree just got a really nice rework im not sure how well it would fit in there. But im sure they can find a way to do it. They could put it in the class tree right under Gust/Spirit walk though possibly, but if not maybe in enhance tree would work.
However if they dont want to add anything new since they just did 2 major enhance reworks back to back, I would be completely fine with an update to Feral Lunge (15s cd and maybe 30y range) and Spirit walk (full root/slow immunity for its duration). DKs, pallies, Windwalkers all have ways to consistently stay out of roots/slows, and WWs/DKs/Warriors have CC immunity/knockback immunity built into things like Demolish, Conduit, Death charger, etc so they can keep uptime. Enh utility is great but overtime other specs have gotten very good utility too and enh already trades cc/survivability for the utility, we don’t also need to trade mobility.