Haha yeah, the extra Palpatine shot was just me having a bit of a laugh after listening to the same 3 seconds of dialogue for days on end. It won’t be in the final version, don’t worry.
I’m almost positive there’s already a lightsaber ignition sound in the original, but it is fairly quiet in the mix. It happens right before the sound drops out, mid-ramp up, just before the big DOUBLE LIGHTSABER LIGHTNING BLOCK TAKEDOWN MOVE!!! If we wanted a more obvious sound effect, that’s definitely a valid suggestion; but to the film’s very limited credit, J.J. didn’t just forget to activate the lightsaber entirely.