You asking political candidates to be a spokesman for a church? That is exactly what they become in the eyes of everyone, when they march down that road. That is a can of worms the candidates regardless of religious belief, should not be opened. Their religious beliefs are a private matter, IMHO, and have really nothing to do with being President of the United States of America. I’m quite sure there is the opposite opinion, this happens to be mine.
It has been an issue in just about every presidential election I can remember. Kennedy's catholicism was questioned. Nixon's Quaker religion was questioned. Jimmy Carter's Born Again Religion was really what put him over the top in defeating Ford. Reagan's failure to go to church regularly was used against him to try to defeat the Religious Right's support for him. Clinton subtley used his big Bible to try to regain lost support and he used Billy Graham and Anthony Campolo to help prop up his image. It was a big deal that GWB was a Born Again Christian and the MSM blistered him on some of his fundamentalist views and practices.
So Romney's Mormonism is fair game. We don't suddenly stop taking that into consideration simply because Romney's religion has a very questionable history and some very weird doctrines and practices. That history and those doctrines are relevant.
Romney would undoubtedly that his Mormonism is the most important thing in his life. Shouldn't we all be educated about what it is that they actually believe?