Totally disagree. The relationship between Michael and Franklin, his past with Trevor, Michael's family issues and his therapy sessions. Game is filled with great writing and interesting character interactions. Holding my attention way more than Last of Us did.
His therapy sessions don't feel great to me. He's sitting in with a dude who has total disregard for him while he just puts up with it — it doesn't fit his character at all. It's also basically a stereotype of the physician who is there for nothing but the money, down to the second, which is kind of how I feel about most GTA titles... they can be lazy, with dialogue meant to string one quest to the next, and not the other way around (the game created around the story, which tends to respect your time and have the least amount of filler).
The relationship between Michael and Franklin is interesting to me as well, so you've got me there.
EDIT: Also, I really have to say that it sucks that the PSN preorder of GTA V is susceptible to the same streaming issue the 360 is. I can't see road signs while I'm driving on the highway. This was authorized to be put out this way. Maybe they intended to figure out the streaming issues prior to launch, but there was no warning that there may be issues, which they announced once the game started hitting the public's hands.