Not sure if this is still active/being worked on, but if it is...
-The Dragon Colony in the Wester Highlands of Serendipity (ask Brisinger/Hormagaunt for the exact location on this one, it's his colony)
-The Daedrothan Colony, which is in that giant group of mountains northwest of Connlaoth on the original map. If you want me to put a dot on the original map to show you I will. ^_^
-Don't know if anybody's said this, but Deadfall Towers would be a good place to have on the map too ^^