I’d rather they just change the class tree and make sunfire baseline for balance only. Replace it with something useful. It already feels awkward having to waste an extra two talent points just to get the extra 5 yard radius. If you’re going with that you’re pretty likely taking that to go down into the nature’s vigil route, so you’re forced to go into sunfire, which is just a bad design.
Not to mention the fact that balance druids need to waste a class talent going into improved sunfire anyway. Either bake sunfire into both resto & balance and make improved sunfire a spec talent for both trees, or just move them higher up on the tree in their own node so people don’t have to waste a talent on another ability they’re never really going to use.