I'm definitely not a fan of Mormonism or the LDS church at all, but you're blatantly prejudiced. The doctrine of the trinity is not at all purely monotheistic. Three different persons are all divine. You may call it one God, and maybe it is, but it's definitely not strict monotheism. It's more like a hybrid of monotheism and polytheism.
You also seem to be forgetting that it is questionable whether Roman Catholics and the Eastern Orthodox are monotheistic in practice. There are patron saints for anything you could think of -- animals, the environment, cats, TV, etc. and innumerable prayers and devotions addressed to the saints. That doesn't at all look like monotheism, and yet you accept them as Christians and not Mormons.
So again, my comparison holds. Baptists and the Eastern Orthodox are worlds apart, but they're both Christian. Same goes for Mormons until you come up with a better argument.
I was just passing by, curious to see what's happened here since I left and I saw this. Even though I hadn't intended to post, this made me want to and who knows, maybe I'll stick around.
Anyway, firstly I'd like to point out that we Orthodox do not have, contrary to this post, patron saints for things. That's a peculiarity of Roman Catholicism. There is no official patron saint of this or that in Orthodoxy, though there are saints that people may end to turn to under certain circumstances and we do all have our patrons.
Secondly, I'd like to point out that we do not by any stretch of the imagination worship saints or pray to them. What we do do is ask for their prayers, much as we would ask someone alive to pray for us. This says more about our attitude to those who have passed on (i.e. we consider them to be alive in the Church Triumphant) than it does any kind of polytheist tendency. While I agree to an extent with the poster's comments regarding the range of Christian belief, any impression that either we or the RCs are in any way polytheist merely shows the poster's confusion as to what constitutes veneration and what worship.
As to universalism, it is something that we Orthodox are perfectly free to hope and pray for and, as someone pointed out earlier, this is an attitude shared by some of the Fathers. We don't tend to view hell as a literal place of punishment (and despite certain remarks to the contrary earlier in the thread this does not negate the purpose of the Incarnation one iota). It is not heresy to wish, or believe that God wants all to be saved and to hope that all will be saved eventually. We pray for the dead, so we clearly do not believe that death is the end of all possibility for salvation, though we have no concept of Purgatory. I am even free to pray for the demons that they may be reconciled to God. What I am not free to do, and what we consider heresy, is to teach that all absolutely will be saved. The reason this is heresy is that it presupposes that God must violate the free will of those who wish to remain estranged from Him. The idea that God will force us to love Him if we refuse is where the heresy lies.
Personally I am absolutely as universalist in my beliefs as one can be without crossing this line. I would also point out, however, that Orthodox soteriology is radically different to the western version. As we see things everyone who is reconciled to God is reconciled through Christ because all of creation is reconciled to the Creator through the Incarnation. It is this reconciliation that makes salvation possible for anyone at all. Under this understanding universal salvation would in no way imply different paths to God.