I Think that more ff charecters should be in dissidia so what we do is we will say charecters they should have made in dissidia i will start
FF4 Kain
FF7 Yufie
FF7 Vincent
FF7 Baret
FF8 Zell
FF8 Selphie
FF8Laguna
FF9 Garnet
FF9 Vivi
FF10 Rikku
That is who i think should be in it