You know as one of those "elitist ******'s" I feel I should maybe provide some insight into the vast and mysterious world of Elitist.
You see it all started when us Elitist ****'s first started DDO and joined some raids or maybe did raids in other games and learned something. There are just like in quests two types of people that run a party. A. Do it for fun don't care if we fail and B. Expect to win using the least amount of resources possible as quickly as possible. Obviously the Elitist ****'s generally all into the later category. And in order to get into group B's raids you need to not be a drain on resources and also not be a totally unknown build that the party leader doesn't understand.
So now that we know the Elitist *****'s want to win and want to win as quickly as possible to move on to the next thing on today's schedule of things to do. If you do not fit the mold of the established "easiest most efficient" way to beat the raid yes you will probably get declined. Does this make the Elitist ***** a bad person? I don't think so, probably other things do but that's another story. It just means you are not a fit and are left with a few choices. Either wait till a non elitist ***** puts up an LFM or Start to learn how to make character that fits into the "Mold" of what they want or Make your own party or just don't raid.
Another thing to do is visit these forums or the DDOWiki to learn more about the raid you wanted to join to see why you don't fit the "elitist" way of doing it.
Obviously there are other scenarios that can occur as to why you didn't make the group such as party leader having bad runs with your guild etc but hey really I think I've covered the normal bases here. So stop being a hater Mr casual man, not everyone is an Elitist and some of those people you think are Elitist will sometimes surprise you and be friendly and tell you the "why" as to you've been declined.
So there you have it most elitist *****'s are really just people who want to get the job done as quickly as possible and not really such terrible people after all. And they don't sit at home thinking oh man if I let casual guy A. into the raid he might get some of my phat lootz and only we elitist should have it because obviously there is a limit on how many ESoS can exist in the game and even one noob having it hurts us all.
The king of the Elitist Jerks