Final Fantasy 7 Rebirth has been announced recently: Who else expects Sephiroth(who is influenced by visions of the Future I.E. Final Fantasy 7 to Advent Children like Aerith is) to save Aerith and get impaled on Jenova Sephiroth’s Sword himself?
Jenova can’t easily claim to be Sephiroth if Sephiroth dies at her hands after freeing himself via consuming the Arbiters of Fate. She’d have to turn into a mocking hybrid of him and Cloud I.E. the Kingdom Hearts Sephiroth(who has Cloud’s face and eyes) in order to maintain psychological taunting of Cloud!
Kingdom Hearts Sephiroth as the Final Boss as form used by Jenova would be epic! Especially if Jenova Sephiroth makes the same mocking taunts as usual though without having to maintain the lie.
It would be even better if the dying Sephiroth after the Boss Fight with Jenova mimicking Sephiroth and Cloud’s form asks to be brought to his true mother Lucrecia Crescent which would show her that her son ultimately sided with Good.
Jenova would become the True Villain of the Franchise unable to fool anyone with her identity even if she can use Psychological Horror despite being unmasked.