I'd prefer beastmaster as a pet job, but I would love to see them import 'monstrosity' system from ff11 as a type of side content.

In that you started with a couple of base forms. Then you unlocked different beast forms by reaching certain levels with other weaker forms, eventually unlocking bigger/cooler forms. Since ff14 has flight, would be cool to unlock griffon or other flying forms and fly as those. If I remember correctly it also had 1 special zone that was pvp like, where regular jobs could fight monstrosity players and vice versa.

(of course I totally just want to play as a golden fleece or a leech because they're just so cute)