Then that wouldn't be a true Kingdom Hearts title. CoM made use of memories (seeing as it's also a part of the secondary title), even that was a part of the KH series.
Any name changes IE removing the "Kingdom" or "Hearts" from the title would make it a spin off and not a true addition to the series. Same as removing Sora from the plot point. And before you go and say that "Sora isn't a part of the main story in (insert new title here), he is a part of the games, just not directly.
Er. I think he's referring to the actual entity known as Kingdom Hearts (the thing Xemnas wants to make babies with), not a game title.