He can attract independents with his views on pot and surveillance and can run to the left of Hillary on issues like foreign policy, and he's been quiet on the more divisive social issues like gay rights and abortion, though I expect he'll pay lip service to them in primary.
I keep saying this, but Rand is more formidable than you think in 2016. He could really portray himself as a change agent against the tired politics of Hillary Clinton.
You say this, while ignoring his faults. He's held 4 different positions on the same issue in a week, he is unable to deal with any sort of scandals or criticism, and he's done nothing to show his positions on gay rights, abortion, and civil rights are going to be any different than his father's.
The second anyone digs up anything, and I do mean anything, on him he will implode spectacularly. He couldn't handle a non-scandal with the easiest solution ever (tell the truth, apologize and promise to never do it again), how is he going to handle something real? He'll melt under the media scrutiny of a national campaign like a snowman in July.
He's done absolutely nothing to show he's anything more than a guy who got where he is due to who his father is. He's a pale imitation of Ron Paul.
EDIT: Also, he can't portray himself as an agent of change. He'll be shilling the exact same shit that messed up the economy in the first place. Even Cuomo would be able to beat him there.