I'd like to see dual pistols, dual swords, dual scythes (Yes that became a thing for me after playing Darksiders 2) and dual axes. I guess that's pretty much every dual melee weapon xD
Also a pistol and sword job similar to the red mage, and it would be interesting to have a club and shield job as well.
Axe and shield from what i see is going to the beastmaster.
Oh and last but not lest, a sole or dual shield job inspired by the shield hero anime
I realize most of these aren't going to happen but one can dream