Likeable in the sense that he was interesting. I especially liked his epilogue (if you let him live) where you find out he has mommy issues, which gives a hint as to what broke inside him. He made me uncomfortable, and that's interesting.

Michael on the other hand was just your garden variety narcissist. That's not interesting to me.

Franklin was interesting because he seemed to have internal drive to break the cycle of poverty he was in. He wanted the American dream, any he was willing to work for it. But he ultimately disappointed me by losing that drive once he made it big (e.g. every time I'd switch to him late game, he'd be in his pool or something).

I wanted DLC to expand on Trevor and Franklin, because I think that could be make them both more interesting.