I'm not at all a Trump fan, and I'm even less a fan of his GOP rivals. I can say though, that his tendency to say whatever floats into his brain is really opening up a discussion on their side I can't recall happening in recent history.
The foreign trade deals we have, NAFTA, CAFTA etc, and soon TPP, are all terrible. They're why a company would even consider moving to Mexico.
I do like that he's forcing the conversation. I don't like that he's offering nothing except vague buzz words and phrases.