Difficult for me to say given what I know of Resident Evil 7 at this time. Seeing as the game will be in first person view the whole way through, the only way it can be somewhat enjoyable on a ryona level (for me anyway) would be to view other characters in peril. The teaser demo for it that was released doesn't even reflect what the actual game will be about... I guess the point of this thread is what you desire to see ryona-wise for the game not what to realistically expect, though... It's just hard for me to imagine what I would like to see ryona-wise not in a third person view of the main character.
We know Capcom wouldn't just put mainline series veteran protagonists in life threatening situations outside of the players own direct control. Look at how Jill Valentine was handled in Resident Evil 5. They backpedaled on that pretty hard. And Chris Redfield in RE6 was pretty damn close to being the one who bites the dust and ending it there, but they chose Piers Nivans instead. We can't expect possible returns of Jill Valentine, Claire Redfield, Rebecca Chambers, or Ada Wong to be put in situations where they meet their end canonically; the backlash would be severe. The only way that would work out is if Capcom announced that Resident Evil 7 would be THE final entry to the numbered series and the story ends there. Even then, I still would think that would piss off a ton of fans if anything happened to their favorites in that way. Maybe have them roughed up or knocked out or something sure, but definitely not anything grim. The only way it'll pass is on new female characters that have good enough development, but at the same time are easily disposable to the story.
If Resident Evil 7 takes place in 2017, that's potentially 3 or 4 years after the events of Resident Evil 6. Of the female cast of characters, we know that:
- Jill Valentine was last known to be recovering from her infection from RE5 and is taking it slow. As much as demand there is for her to return, I guess it is possible if she recovers fully.
- Rebecca Chambers currently is unknown as to what she has been doing ever since the end of the first Resident Evil game. Apparently, she will return in the latest 3D CGI movie Resident Evil: Vendetta. Extremely unlikely she'll show up in RE7.
- Claire Redfield worked for TerraSave which had a recent breach in security given the events of Resident Evil Revelations 2. The events took place BEFORE Resident Evil 6, so what became of her afterwards is unknown.
- Sherry Birkin continues to work as an agent of the government. Whether or not she'll be involved in RE7 is unknown given her ending, but it is possible she could return.
- Ada Wong is still alive and working for an unknown organization or her own motivations. Given her exposure after the events of Resident Evil 6, she might stay in hiding for a while. But it's possible she'll return anyway.
- Sheva Alomar works in the African Division of the BSAA even after the events of RE5, so it's unlikely we'll see her again in RE7 as the game takes place in the US.
- Helena Harper works with Leon S. Kennedy as an agent in the government. However, even if Leon is in RE7, it is highly unlikely we will ever see her again as her role and character are not important enough. It works for Ingrid Hunnigan because she's on the outside of it all the action as support for Leon.
- Moira Burton probably no longer wishes to involve herself in fighting B.O.Ws and wishes to stay family person with her father, Barry, now that they both get along much better after the events of Resident Evil Revelations 2.
But of course, new female characters can always be added in as well. It's just going to be near impossible to have anything happen to the returning veterans in-game ryona-wise if they aren't playable.
I do like your example of being given choices in certain scenarios that decides the outcome of some female characters in the game. They would really have to make it involved, though. Not like a five second showing and then you have to run away or they get removed off-screen. However, it would be a bit tied to just that one moment with that one potential enemy type. What made Resident Evil ryona amusing is that you can take one character and pit them against a wide variety of enemy types seeing multiple ways they can be disposed of. If such choices were possible, like with your example, then it would just be that one moment. You wouldn't see that female character against another enemy type unless they had branching paths for that character which is where it gets a bit involved. Kind of becomes like a TellTale game in a sense.
As of right now until more is revealed, it's just... pretty difficult to think up anything myself. I am very, very sorry for coming off too real and ruining possible fantasies and wishes that people want ryona-wise for RE7. Just the knowledge alone that this will be a first person view only game kind of limits my expectations ryona-wise... I guess my only wish is if you do go into a fail state in the game, that it shows what happens to your character in third person.