What DV-330 said!

I added some commentary as to why I think this is a genius idea on Hal’s Legendary board.

Now that someone has mooted the idea/concept, I can’t help but think it’s an absolute must

Quote from Hal’s TFA: A Gentle Restructure board:-

I think adding the Palpatine laugh is a great idea and in my mind it works on at least two levels:-

On one hand even IF the addition is not not directly linked in TROS, it could give a bit of extra weight to Luke’s mindset that caused him to actually consider killing Ben:-
The surge of Paranoia caused by seeing a vision of Ben turn and then associating him with becoming as cruel and evil as his former foe.

It’s that which ultimately triggers Luke to ignite his saber, almost as if it’s an instinctive response triggering by PTSD

…by the time he gathers his senses and decides not to give in to his fear, it’s too late.

Or if TROS goes down the path that we are all thinking it will:-
It’s a more literal indication/foreshadowing that Palpatine was/is still pulling the strings from beyond the grave and able to extort his influence over both the heroes and villains in order to position all of them into doing everything he needs them to do in order to execute his return to power.

In this case, even in ‘death’, Palpatine was able to capitalise on Luke’s fear/weakness and manipulate him into pushing Ben away…which subsequently cemented his turn.

And this brings us back to what he said back in the throne room during ROTJ:-

‘Everything That Has Transpired Has Done So According to My Design’