Hey, I’ll try to be objective here: we REALLY need a Earthmancer!
Earth skills for wizards are spread among subclasses that can’t use and develop them well. Imagine an Earthmancer with Onmyouji in it’s class tree? With this, Onmyouji earth skills’s would make much more sense.
Also, earth is an amazing element and the skills that you guys could create would be as amazing as the ones we already have.