Personally, I would love to see Dual-type Elementals from Abyssea for Summoners.

A few light changes like spells for 76-99 and possibly a Ward or Rage option just to say "Buff" or "Nuke" for next cast. Don't actually give any control on the specifics or timing, but just sort of "Nuke next please" or "Buff next please" possibly with a target option like "/Ward <p2>"