The first two sound good to me, especially the farmer/breeder. Those could potentially even be two seperate DoL. Breeder focused on Chocobo breeding and farmer focused on raising chickens, growing vegetable gardens, etc... It'd make sense if Botanists could collect seeds from certain nodes which could then be planted in your garden.

I don't necessarily see a need for a builder class only because I think SE stated somewhere that the ability to craft stuff for people's houses was going to go to current crafting classes. But, with that said, I wouldn't mind seeing it implemented either. :P