b-zulu, there will always be some among the "larger comic book buying demographic" who will find reason to complain about black comic book characters and their circumstances.
Today, arguably the most powerful black comic book character in the Marvel/DC Universe is John Stewart, the Green Lantern. Now, he's a fine character. I especially like his current characterization. His glowing green eyes demonstrate the intimate link he has with the power of his Ring. Still, you will find some in that "demographic" who will whine and moan whenever John Stewart is prominently featured in the comics and you especially saw their viscerally negative response against the character when it was he and not Jordan, Rayner or Gardner who was chosen as the Bruce Timm/Justice League Lantern. Bruce Timm is a huge John Stewart fan by the way. When John Stewart's love relationship with Shayera Hol was revealed in Wild Cards, the venom against John Stewart really began to flow.
There is talk about a big screen appearance by Cloak and Dagger. Unfortunately, I have learned to assume the worst of certain segments of the "demographic" whenever a black male is teamed with a white female. I can't recall ever reading any negative messages associated with Namor's relationship with Carrie Alexander during John Byrne's run on the Sub-Mariner. The "demographic" seemed fine with Danny Rand/Misty Knight. The only negatives I've been aware of associated with Ororo's dalliances with Wolverine and Lifeguard's brother (I forget his name), is that neither of them got to get it on with Ororo and that she is now married to T'Challa. I like Jessica Jones. But notice how she is drawn sometimes. She is a pretty lady, but she is often drawn in such a way that her rough life shows through. She is no Emma Frost by any stretch of the imagination. Maybe the "troubling segment" of the "demographic" don't have much of a problem with the Cage/Jones union and the fact that they have a biracial baby because they don't think much of Jessica. But Storm on the otherhand....Storm is unquestionably the most exotic and the most beautiful female comic book character ever created. She could have belonged to the Wolverine or any number of male mutants not named Bishop, but no. She is married to T'Challa and the "demographic" has led the charge of those criticizing the marriage as being "forced".
Those of that certain segment of the "demographic" might have gone for all-black singing groups like "New Edition" because I'm sure that many of them were fans of "New Edition's" imitators: New Kids on the Block, Backstreet Boys, N'Sync, etc. But when it comes to an all-black superhero group....now that's something else entirely.