"smartass?"..OP has a point.
Just pull out the network cable out of your xbox or playstation and ignore online. Storyline rushed? If you do the entire storyline in one breath then of cours its feel rushed. Just do a mission and then do some other activity, and besides you missed some fantastic moments. But that's you get from rushing the storyline.
Nope, I've tried to enjoy the storyline as much as possible and I've played through it multiple times. I'm the kind of person who pays attention to details and yes it still feels rushed.
I've played through the storyline twice and it didn't feel particularly rushed to me. Short, yes. Rushed, no.
There's more than one route through the game, there's multiple endings. Each character has their own story. Each of them has a process of development within the story.
It took me nearly 4 weeks to play through the first time, as I kept wandering off and exploring. So, to me, the story felt longer than it would to someone that blasted through in a weekend. I didn't even get to 100%.
Second time? I've finished the story and I'm slowly inching towards the 100% mark. But I keep getting distracted by the off-game entertainment that's in there. God knows how long I've lost to the Golf mini-game alone.
If you take your time, it feels a lot longer than it really is. Try to sip and savour, not binge and purge.