, maybe, in Thorn's Blackmoor. :P Also, .

Merfolk, and sea elves, I think, would not be out of place. Were-creatures would be something relatively "new" to Thorn's Blackmoor, the first generation more than likely being the result of genetic manipulation of the Egg of Coot.

I could see the Tall Tale of the Wee Folk fitting in easily if implemented right, though not sure of Woodrake would fit well. Centaurs might be found in the wild lands of the Vales and Sidhe among the elves or men of Blackmoor. The Sea People is a nice thing for a aquatic campaign but other then that not sure how it would fit. Top Ballista is a strange thing, Harpies might be allowable in more monstrous games but as for the gnomes maybe they could be a 'iffy' thing. They have fantasy engineering and as nice as that may be where will you draw the line? Also the Night Howlers would be iffy, might be known in the wilder regions where barbaric tribes still hail to primal totems and practice primitive magics.