Sword and Gun, sounds very Bloodborn, I like it

I'd really like to see more Blunt weapons though, like Hammers or a Quarterstaff.

Another idea that I've always liked is a class that can summon a variety of weapons (think Elder Scrolls weapon summon spells); though I've no idea how that would fit into FFXIV.

Failing all that, Catmancer; can't possibly go wrong with Catmancer.