Either it'll have a decent storyline or it'll die a quiet death.
Who plays these kinds of games for their story?
No one. The only thing that will save this game
for me is if it's fun... I play GTA to kill people and listen to music while I drive my car over ramps into other cars, blow things up, hit women in the face with my backhand, and snipe hardworking citizens from the top of malls while I fend off helicopters with my extremely unrealistic stock of RPG-7 ammo. I find the story in all GTA games to be detestable, especially GTA V's. None of the characters are likable and the plot is always worthless, as if it's written by a room full of chimpanzees. If I want a good story I'd play an RPG or MGS, not a sandbox game where hitting the curb with your vehicle the wrong way makes you fly into a glitch zone forever.
There's already so much hype for this game that people are going to buy it regardless of whether it's good or not. Ubisoft has been milking the hype-machine online for Watch Dogs for awhile now.