Newt's playing it smart.
He's waiting for the demand to build up; he'll swoop in with a blitzkreig of ideas, and then any attacks on him personally will look desparate.
It probably won't work but it's his best chance.
Ideas do not win presidencies. Ideas merely create controversy and people do not vote for controversial or aggressive characters.
The people want to feel good about themselves and their vote. Thats all. They want to be on the band wagon. They want a charismatic personality, sexy appearance, and someone to make them feel good, "Morning in America" kind of stuff.
he who has fewest controversial ideas wins. sorry.