I don't like the Dragonlance setting much. Most of the Weis and Hickman novels are great though.
Problems:
Nothing for the PCs to do: The Heroes of the Lance have done everything of note that is important to the setting. So the PCs are either the HotL, or do things that have little to do with the setting, and could be done just as well in FR or greyhawk.
Stupid Comedy Races:
Kender, Tinker Gnomes, and Gully Dwarves are incredibly lame and silly. Most Dragonlance DMs love them and insist on including as many as possible. And you can't do anything to get rid of them as that would be evil and you're supposed to be the good guys.
Or a player plays a kender just so he can be a totally annoying ******* 'in character'.
That's the main two problems.
Geoff.