It's more that he'd bring ideas to the table that the other candidates won't touch. Sure, I disagree with 75% of what Ron Paul has to say, he is a republican, but the remaining 25% is stuff that no major party candidate would consider saying. He's opposed to both the drug war and drone strikes.
I also can't see any of his really wacky ideas, like the gold standard or completely dismantling the social safety nets, actually happening.