I grew up as a United Methodist and was involved in decision-making bodies at the local, state, regional, and global levels. Practically all of what was said on this board is true. The United Methodist Church has a lot of variety within the local church setting. A church in New York City you would see pro-gay, social gospel, "Christless" Christianity running rampant. On the other hand, a rural church in the Bible belt could offer a typical run-of-the-mill evangelical experience. While every now and then, you will find one that, although Arminian, has gospel-centered, Biblical teaching to a degree (excluding, of course, violations of Biblical worship found in many churches: even conservative, evangelical ones).
There is a significant group of individuals seeking to reform the United Methodist Church (among them
The Institute on Religion & Democracy and
The Confessing Movement.)
While the United Methodist Church will most likely never return to the days of John Wesley, I actually do not predict the same future as the PCUSA, Episcopal, and Lutheran churches. While these three are practically tripping over themselves in an effort to ordain homosexuals (the most recent being the PCUSA this week), their one difference with the UMC is constituency. They are USA-based while the United Methodist Church is a global church with significant (and rapidly growing) membership in Africa and Asia. What you see globally is an evangelical, conservative, church. Delegates from these areas consistently vote in favor of Biblical social issues and the Gospel. One delegate from Africa even saying during a debate on homosexuality that when he was a kid, he remembers Methodist evangelists bringing the Gospel to his village and now it seems that they are reminding the church of the very same Gospel. I believe that liberals in the church will be frustrated by their inability to accomplish their agenda and there will be a split.
However, this doesn't address an unbiblical model of church structure and organization, regulative principle, etc. We see these same things in other more "acceptable" Christian denominations and circles as well.
My wife just told me I've written a book and so it seems - sorry for being so wordy. It's just the UMC has a special place in my walk with the Lord - in His providence God found me, saved me, and grew me all while an active member (and even elected official) in The United Methodist Church. (In case anyone cares, I wrote an article on Why I Left The United Methodist Church
here).