Would people have bought Samantha Wilson: Captain America though?
And I do agree the supporting cast is a problem. If the Mary Janes came over to 616 and didn't use fake IDs, what would 616 MJ, Betty and Glory think, seeing younger pop star versions of themselves? It does sound like Ghost Spider #2 will set up a new supporting cast for her on Earth-616 though, however her Earth-65 cast will still feature.