I can’t say that either of them are JW best works of art. I completely agree that the Victory Celebration squence should go, its very out of place in the trilogy and even watching it at the end of a 6 part saga, still feels out of place, because it doesn’t even make sense that the whole galaxy is celebrating (and if you are a sequal lover, it makes far less sence as the empire isn’t fully defeated yet).
As for Yub nub, its not great, and feels off for a final ending to the trilogy/saga and the mix with the outro ramp up at the end is a bit messy. But, it fits the scene its in, so short of having someone compose a new piece and recording a orchestra playing it…
Its the best we’ve got so unless adywan has some of his cunning and secret, dark magic, sourcery up his sleeves. Yeah he’s gonna do Yub Nub.