I always found meeting a quota of ethnicity a bit weird. I see and agree with the point of it, but forcing it seems...creepy
Okay this is a bit white, hey you, youre out...okay youre black so you can come in, okay we also need an asian or two.
And in writing. Again its a little irky to assume everybody in a typical novel is white. But if you force people to make it more ethnic, youre just gonna get people going
"Oh, its whitewashed *inserts the word asian into a couple of character descriptions* done."
At least thats what i would do, just to irritate others by being blasé about it