https://www.theguardian.com/culture/...-princess-leia

So... what do you guys think should be done with Leia in future Sequels (Eps VIII and/or IX).
A. unused footage; there would probably be deleted scenes with Carrie from The Force Awakens which they might be able to digitally insert into new scenes in Eps VIII and/or IX.
B. use a body double with a digitally altered face, as they did with (Rogue One Spoilers): Leia and Tarkin.
C. just hire another actress without digital altering (as they've done with Mon Mothma in Revenge of the Sith and Rogue One).
D. create an off-screen reason for her non-appearance mentioned verbally by another character or in writing (opening text crawl)
E. other ideas?

B and C seem like the best options to me. C would definitely be cheaper for the studio. Option B would see them spend millions of dollars digitally altering a body double's face just for a limited amount of screen time, whereas Option C would save the studio a looot of money. And CG altered faces will never look completely real to audiences, while a new actress will never actually look like Fisher.

P.S.: Option B should also require permission from Fisher's family, out of respect. Rogue One did obtain permission and blessing from Peter Cushing's estate in using his likeness in the film.