One thing about Olympus Coliseum is that in every game it is in where new worlds are introduced a Final Fantasy Character is involved with the worlds plot. In KH1 we had Cloud (with Sephiroth brought in for the Western release), in KHII we had Auron and in BBS we had Zack. So I feel that another FF character would likely be used to appear somewhere in the world for KHIII.
I myself would be quite interested in seeing Gilgamesh being used, as he would likely fit in the story quite well.
One thing about Olympus Coliseum is that in every game it is in where new worlds are introduced a Final Fantasy Character is involved with the worlds plot. In KH1 we had Cloud (with Sephiroth brought in for the Western release), in KHII we had Auron and in BBS we had Zack. So I feel that another FF character would likely be used to appear somewhere in the world for KHIII.
I myself would be quite interested in seeing Gilgamesh being used, as he would likely fit in the story quite well.