I'd also like to highlight a couple other rules of thumb before posting...
MMORPG? As far as I can tell from reading about online game projects, and from seeing actual online games, I feel that story is kept to a minimal. Not to blast anyone that is coming out with a BMMORPGSTWCTW Breakthrough Massive Multiplayer Online Role Playing Game Story That Will Change The World but I've never seen it done. As far as that genre goes, I don't even think it needs to be done.
Dragons and Dwarves If you are posting a game scenario that could generally be described as a sterotypical RPG i.e. medieval europe with dragons and magic and swords, bear in mind that you probably won't receive the most quality of feedback. If it's something that's been done before, it would be common courtesy to let us know ahead of time.
On the other hand beware trying to break from the stereotype by just adding some sort of gimmick. For example, robot dragons and bazookas might separate your RPG from the average run of the mill ones, but comes off so shoddy that it sacrifices anything your game would have had as far as story anyways.
Dragon Ball Z and Mickey Mouse Bear in mind that if your story surrounds characters, settings, or stories from pre-made universes (from say final fantasy or dbz) you willingly suffer the wrath from anyone that doesn't like those tv shows or games. Your idea will be most respected when it is clearly your idea and yours alone.
Well, that said, I hope you will all benefit from reading this. best of luck and happy programming, ~Chokki