Right now my group is Knight, Dragoon, Geomancer, and Red Mage.
I'm REALLY liking the Geomancer because Terrain is getting very strong. I tried using a shield with my Knight, but it lowered his attack too much so I went back to using two swords, same with my Dragoon, only with spears. My Red Mage is used mostly as a physical character, using a cura when I need it but that's about it.

As far as my end-game group goes, I'll definitely be keeping the Geomancer, and probably the Dragoon, I'll switch Knight to Darknight when I get the gear, and for a caster I'm not sure if I want to do a Summoner or Sage.

Also, I have a question for those of you who've ued Ninja's. Would it be wise to ditch Dragoon for one or not?

Thanks.