That's a weakness with the whole of PS3, though. Everyone just gets strung along until the plot resolves itself. Actually Rhys is the only one who decides to go off on his adventure (terribly stupid though it may be), whereas everyone else just sits there until their experienced parents wave them away with "go solve this huge, vague problem, will you? I'm having tea."
So I often say I only like three or four characters in this game, and that's why. Lena, Mieus, and Wren. And only one of them has any real depth to them. Somehow I doubt this would've been much different even if the developers had all the time in the world.