I am ex-Mormon and my wife an active but liberal Mormon. While more liberal LDS ideas might have helped slow my exit from the church, I don’t think I see anything fundamentally changed between liberal or conservative Mormonism. True, many conservative Mormons look down their noses at my wife because she voted for Obama and listens to NPR, but she is still accepted enough to be in the stake Relief Society presidency. But while they think enough of my wife to put her there, she still has to listen to the same old drivel in sacrament meeting and Sunday school, people still spouting the same radically un-American (meaning anti-Obama) rhetoric right from the pulpit with no interference by the bishopric.
But more than this, both liberal and conservative Mormonism is largely the same for people like me. Liberal Mormonism still includes Joseph Smith, whom I consider to be a false prophet who practiced serial adultery and who introduced secret, fundamentally anti-American practices (Council of Fifty and use of Blue Lodge Masonry–i.e., the temple endowment–to swear polygamists to secrecy) , and who routinely lied to the public and to the body of the church. And the church still remains a system that routinely divides families along lines of belief and obedience to LDS strictures. These fundamentals do not change between liberal and conservative LDS ideals.