My issue isn’t with the actual editing but the idea of preserving the twist. Since almost everyone knows it and it’s not that big of a twist removing an entire conservation with Snoke, and Kylo saying Grandfather is too much to sacrifice for preserving a twist. The Vader helmet scene is improved with the “Grandfather” line because it shows you what Kylos misunderstanding is when it comes to the legacy of his lineage. And the Snoke scene further deepens the pressure on Kylo to not give in. It lets us know Snoke personally addresses that Kylo better not shy away from doing what’s necessary. (Killing Han)