I think DoL or DoH shouln't be treated as just a side-class if you want people still be able to play it. They still should have an influential role in the story.
It's fine the way it is now. A swordsman can still be a good fisher, he has to eat right?
I think you are asking for something you don't have to ask for. Ofcourse they are making the Garlean empire storyline for combat classes, but don't kill the armory system by making gathering and crafting only able to fight with fishing rods and needles. That's just stupid.
There is no problem as of right now with that. So don't go looking for "solutions".