I think we all know that anyone who made the cut for DOAX3 will be in the cast right out of the gate. They were voted into that game, so popularity has merit. So I don’t think there is a need to worry about NyoTengu, Momiji, Marie Rose, Honoka, or any of those characters who have proven that, though they were dlc or not quintessential to the story, they deserve their spot in DOA. The only female that might not come back, besides guest characters, would be Rachel, Alpha, Phase-4, and maybe Lisa. While I don’t care about the Kasumi clones, I do care about Rachel and Lisa. Lisa is quintessential to the story now though. I mean she is the head scientist for DOATEC... even if she isn’t major in the story, they will show what happened to her and she may be like Ein and Leon. Irrelevant, but classic. Rachel has a major shot though. She works well with the idea of true and powerful fighters and proved that in the tournament scenes. Also if they bring Momiji back, then Rachel will likely be back as well.
As for the DOAXVV girls, time will only tell. It seems like if they could work them into the story, give them an interesting and unique fighting style, or see their popularity as an asset to the game, then they will make the cut. Otherwise, they may remain exclusive to that game. Personally I think that’s a shame because they are very nice looking characters and it would be a shame to waste those assets. Either way, only time will tell.