Forgive me if I’ve already asked this, but is the edit idea of Vader saying “Your mother once thought as you do” rather then “Obi-Wan…” still happening?
Also I have a suggestion: maybe during the saber duel, when Vader walks down the stairs after having thrown his lightsaber towards Luke on the railing, he uses the force to pull his lightsaber back to him, which explains how he gets it back.