You can set hotbars to be shared no matter what job/class you are using and a few of the last cross hotbars are default to that
You can choose to have a shared cross hotbar (if on controller) on a hotbar you never use for your DoW/DoM jobs and such and put all your crafting skills there so you dont have to edit all your crafting classes' hotbars separately. You would still need to set cross class skills in the actions tab to be able to use them though.

I dont know how it would work on KB&M controls though