I don't see how anybody can have any options here. You just have to get all good free agents, because all good players in teams are never to get, believe me. Well, you might get 1 or 2 until you have everything you need from blitzball. So basically I'm trying to say that there is no much choice.

Free agents I got to my team:
Wedge
Ropp (this guy rocks!)
Miyu
Svanda (she is awesome)
Kiyuri
Shaami
and of course Tidus.
That was a great team, my world class team, haven't really lost a match if I didn't wanted to loose. I had some goalie at the begining which name I forgot, this was my final team.