In this context Palpatine’s plan as well as his dynamic with Kylo would have to be changed. Palpatine will give the impression that his days are numbered and that he has been waiting for the dyad to take his thrown. Instead of ordering Ren to “kill the girl” his dialogue would change to “find the girl” “turn her, and together you will rule the Galaxy as Emperor and Empress, a dyad of the darkside of the force". Of course its a trap that will be sprung when the dyad is brought before him. “long have I waited, and now, your coming together will be your undoing”. This dialogue from the trailer could replace his surprise at the dyad, proceeding to force drain the pair.

Here Ochi and his ship have nothing to do with Rey’s parents. He is just a sith hunter that can lead the way to the wayfinder, the ship that Rey sees in the vision can be recoloured or changed to look different.