Geo needs to be destroyed, it breaks the game in half. It makes enemies have no defense/mdef and greatly reduced magical evasion while giving mages GREATLY increased magical accuracy.

Nerfing geo is much easier than buffing 2 jobs, and RDM would literally need stymie to be passive or new traits that give OBSCENE magical accuracy to ever be worth bringing over a geo, which is far too much work.

Nerfing geo to the GROUND is the easiest way to fix support job balance issues.