I think some kids and others will want to see more of the characters regardless of the actual idiocy of the story in the end so I don't think they'll time jump beyond them.
Personally I cannot stand how the story went, Rey Palpatine/Skywalker. About the only interesting thing they can do is have people turn against her or find out she is related to Palpatine and what stems from that, maybe some bipolar corruption from ghost sith. They can't escape it, thanks JJ. It needs a major retcon to give Rey her own agency and no lineage.
Another thing they could maybe do is force ghosts, yes Palpatine blew himself up but all the sith, all the souls escaped so maybe there is some or one haunting around, corrupting someone or even Rey, turning her and you could bring Ben back as a ghost too, think of it as good and evil on her shoulders or one of her students.
The galaxy's hero is a palpatine and the fallout is possibly interesting. Turns the Republic against the new Force users or splinters the groups into different factions, loyal and one against Rey. Blackmail, mistrust, push to the dark side when people turn against them.
