Idea about a balance to the nerf
I think they definitely have those things in mind. There are people working at Anet full time just to think about balancing the game so they most likely had this idea a long time ago.
The problem is every little buff/nerf takes a lot of time. Besides that there are also a lot of bugs waiting to be fixed.
The only thing we can do right now is wait and hope. Hope that Anet had enough time to try out the changes and fix some bugs too.
And don’t worry, the elementalist will never be trash just due to the fact that they offer a lot of utility and damage. The bunker build will be nerfed but other builds will become better and more popular which is always a good thing.