Another idea for a change that might sound odd to start with but bear with me.
It would take a lot of work and the effect may seem superficial but I noticed that monochrome edits of the prequels work better for me. I was trying think this out and I remembered how in ROTJ:SE they changed Seb Shaw’s eye colour and removed his eyebrows to make him seem more like Hayden.
What I’m proposing is the opposite.
What if Hayden (Jake too) and Nat swapped their hair and eye colours.
That way Luke would look more like Vader’s wife and he would be able to more clearly make that match between her in pain and his son in pain (this might be compounded if he only used Force Lightning once on Padme, instead of choking her which only really made sense to me as an expression of Vader’s inability to breath unaided after the following battle).
Anakin under Vader’s mask would look more like Anakin in the PT without having to change the OT as much.
We would subconsciously see Leia as being more at risk of succumbing to the Dark Side because she was dark haired like her father, rather than being the same sort of diplomat that her mother was.
In the current films we’re are meant to make that connection between Luke and Anakin but the defining moment of Luke’s journey is snapping at his father and almost becoming him but pulling back.
That is sold to us by Leia being in jeopardy from her own parent so making her parent more like her than Luke is the sort of visual storytelling that the OT did well but the PT did terribly.
Still a lot of work for something probably only I can see but I’d be interested in hearing what other people think of this.
It might not even be something that can be done convincingly.
