I think that the room should be pitch dark until all of the Jedi but Mace are down. Have them flicker a bit when Palpatine stands up, just like before, and then right before he ignites his saber, shut them down completely and LEAVE them off, not going on and off like how it is right now. Pitch dark, only the blades, and then when everyone is down by Mace, turn them back on to reveal who the only Jedi left is. And by pitch dark, I mean not even seeing the tops of heads like we do right now.