I think given how TROS has performed moneywise, Kennedy won't be given the ax. Not saying she won't leave on her own, but i'm skeptical Iger will can her.
Then again, I think Iger has effectively taken alot of power away from her anyway so there probably isn't a need to fire her.
Ultimatley if TROS keeps performing good enough to make a billion , Disney will keep churning these films even as the quality of the story declines; as they have more drama behind the scenes, as the sw fandom is a dumpster fire of hardliners on both sides, and as the tomato scores go down.
Had TROS really kept underperforming as it looked like it might after the first weekend, then I think there would be a bigger shake up all around.
But , if this is another billion dollar hit film, regardless of how much a better film could make, I think Disney will settle for a " passable" film as opposed to a really good SW.