If you're thinking about it, why not steal from RO?

They had a great Merchant -> Alchemist and Blacksmith -> Biochemist and Whitesmith (clearly this was some racial white power thing here lol).

TBH, I would LOVE to have RO classes in FF14. RO had great class design!

Also, acid demo was an amazing tank killer, and cart term was a great dps killer.

EDIT: ALSO THEY HAD ADORABLE CARTS WITH PANDAS ON THEM OMGGGGGG