HobbitFan
Explorer
The problem is Sailor Moon, that fans of the setting have proven to have a fairly weak grasp on "established background". [MENTION=3586]MerricB[/MENTION] already proved to you, more than once, that Tiamat has long been part of FR, as has Tharizdun and the Elder Evil.
Funny how "wrecking the gaff" means, "Stuff I personally don't like, regardless of quality", whenever this sort of discussion comes up.
Hussar: The problem with Tiamat and the Realms isn't that she doesn't have some history there. She does. The problem is that she hadn't been banished to the nine hells for centuries like the beginning of Tyranny of Dragons fluff suggests. And, she's really not that importnat a goddess in the Realms anyway. The second point can become a stength in that she and her worshippers work extra hard to become important. That's fine. The banished from the Realms for centuries and trying to come back when she already HAS come back is much more problematic.