My current team is
LF: Tidus
RF: Wakka
MF: Brother
RD:Nadia
LD: Jassu
GK: Keppa

Please note that I don't have the airship yet though I want my team be
LF: Tidus
RF: Wakka or Nedus (He has to be a high level though)
MF: Vuroja (he can learn invisible shot)
RD: Kulukan (ecelent passing) or deim (good attack)
LD: Ropp (good attack) or Irga Ronso (ecelent passing)
GK: Nimrook (good at the begining and till the end)