I don't know how much of a demand there is for Cheetah, but I recall what happened when you posted the previous When Cheetah was Awesome series.
Gail thanked you because she was just starting to write Cheetah at that point.
So the demand may or may not be there, but the -need- of such a resource material is there, for future writers to stumble across and actually understand a character so precious few understand.