Hope not only resolved all his issues with his father, the party never had the chance to see him again even if he hadn't.

You can go right back to Caraway as soon as you have the Garden but all he says is "look after my daughter." There's not even extra dialogue if Rinoa is in your party. Also he's never mentioned ever again in spite of being a general in the nation you are fighting for the rest of the game.

Having Caraway around makes Rinoa an individual, a character with he own worth, and we can't have that.