I'm unsure how directly relevant this is but when I dug into the implementation of Elixir's LiveView stuff I was frankly amazed as to how little javascript was

I'm unsure how directly relevant this is but when I dug into the implementation of Elixir's LiveView stuff I was frankly amazed as to how little javascript was needed client side to apply the diffs being sent down. I'm aware this is significantly because they "cheat", but I feel like you're already looking at borrowing from other peoples' trickery so maybe it'll still be of interest.