The main problem of the game isnt change battle system , armory system etc... is CONTENT imho i want content not the change of the current game. I dont like see that my linkshell icon is bigger that my char head or that the Puks eat the factory of anabolics. I dont understand why change the party to 4 or 8... this deserve problem to find partys like on XI.

My suggestions:
Fighting on Chocobo
Ride on other creatures like Dodos (now they have perfect size for all races)
A Trading Card Game inside the game like Triple Triad or Tetra Master.
A tower defense campaign like system ( we have already towers for over the world)
More creature races i like to see Orcs Yagudos (not that ripoff of Ixali)(No quadavs ty), wild mumbas etc...
Content, content and more content stop it of changing what is done!