I have to say I didn't like the end to Tales of Destiny, because all the character development throughout the game just went no-where.
Although, in Tales of Destiny 2 you get know what happens after. But I just wish they were able to tell you this during the first game.
Tales of Vesperia is another game that comes to mind, because again, they don't really take it anywhere in the end. I couldn't picture what happened, or what could've happened.
Haha! It seems like the 'Tales of' games always like doing this.
People usually say it's up to your interpretation to make out what the ending is, but I really dislike those endings. Throughout the entire game, we go through the writers story, exactly the way he wanted it, but for the ending, all of a sudden we're the writer? Bah!
It just makes it feel incomplete, in my mind.
Though some games can do that well. Terranigma comes to mind. That ending was fantastic.