The lack of emergent gameplay is a huge turnoff for me. I've only ever been able to tolerate GTA games for so long, in small doses, before the facade crumbles, and this sounds like no exception.
What I am hoping for the most, though, is a texture mod to remove all the ink from NPC skin, especially the female characters. Any ink, even the smallest amount, makes me cringe. Yes, I am a prude.