Im gonna agree with the first few posts, the wings we have now need to be improved before more wings are added.
Fairy wings would be nice though i doubt id use them. The bird and bat wings are different to IT's so id like to see some "fairy" wings different to IT's. The fairy wings in IT are also butterfly/moth looking wings.
It would be nice to see some different wings from IT's, not the same (bird, bat, fairy). Dragonfly wings would be cool, same with bee or fly's wings. Seeing how moths, flys and bees fold their wings it would be more tidy then how the wings fold up now.