Does it have problems and quirks? Oh yeah.
Does it need a "reformation" like the Christian church needed in the days of Martin Luther or like Islam needs today in order to be a religion of peace and not a theocratic-political-cultural system of conquering and domination? Nope.
Just my opinion.
Any cult started in America is “an American religion”, there must thousands of them, Scientology for instance, it is not related to Christianity at all, for one thing it has countless Gods, even Mitt Romney himself believes that he will become a God and rule over a planet of worshipers, just like our God is to us.