I would prefer the following:

Red XIII Companion
Snake in the Lake Mount
Cat Sith Mount
Gold Chocobo Mount
Cloud Outfit (AC preferred over FF7)
Tifa or Aries
The Highwind for a ship design
Emerald and Ruby Weapon Minion - but 2 times the size of the 2.0 minions so we can see it
A minion that is either a changing master materia or all 5 of the them

My personal Must Have - All weapons given are based on The Knights of the Round Summons!!!!!

Or they setup a either a Trial of PVP fight where we get to fight the Knights of the Round!!!!! YES ALL OF THEM!!!!