One of the best parts about Wicked is the "alternate universe." What is perceived as normal or acceptable there doesn't always parallel our own world's beliefs or prejudices.
In face, it helps call our own perceptions of what is "normal" into question. I see no reason why that shouldn't be taken one step further.
Their monkeys don't look like our monkeys, wings or no wings. The designer did that on purpose. Also, you have some Shiz male students wearing skirts and other "hybrid" rule-breaking fashions. Not "normal" or "trendy" in our world.
Their vocabulary isn't quite the same as ours either. It's English, but with some "new" words thrown in here and there to give it a "through the looking glass" feel.
That's why I think a black Glinda would be just fine in that world, and actually a good casting idea... even if some not-too-broadminded audience members have issues with it. It would force them to think about how they can negatively view this Glinda AND root for the "green girl" all at the same time.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22