I’ve been thinking about the cave scene and the reveal of Rey’s parent. I personally believe it will be better to leave the scene as is and not incorporate the hood silohoutte and this why.

Rey went into the cave to reveal her parents so why would the cave show her grandparent (Palpatine)? She even says “show me my parents” in the cave
The vibe I’m getting is there will be two edit types of TROS. One version will the keep Palpatine as Rey’s grandfather and the other version will keep Rey as a nobody. By having Palpatine’s reveal as Rey’s grandfather in Poppa’s TLJ edit then you only get one choice of the version of TROS to watch. So if you prefer Poppa’s TLJ edit but would prefer Rey to be a nobody in TROS then it does not flow (however, this could just be my OCD kicking in!).
My interpration of the scene is the cave purposely did not show Rey her parents because it was trying give her more reason to go to the dark side as she desperately wants to find her parents. She even force reaches out to Kylo Ren because of this. I think the scene work as is.

With all the Palpatine return clues being incorporated into V3 such as Palpatines laugh in the Luke/Kylo flashback, Snoke’s eyes turning yellow after he is cut in half and the radio broadcast I personally don’t think the hood silhouette is needed in the cave scene.