Palpatines lightning
it might sound stupid, but why is it exactly that palpatine used lighting on mace. anakin could see that he was fallen and begging for mercy so he didnt need to use any more power to show weakness. lucas said the whole thing was an act and he was never weak, so why do it at all. was it to show anakin that the sith have power beyond the jedi like force lightning. was it so he could look like hes putting up one last effort against mace? if so his whole "you have lost!" thing couldnt have made him seem all that sympathetic to anakin. it came at a pretty high price (his face) so he must have had a reason. i doubt he did it to make the jedi seem worse to the republic, i dont think hed need that much proof becuase he has most of the senate under his control anyway.
on a side note i think it would have been a hard scene to film as an actor without feeling kind of stupid i think. youd have jackson holding a stick and pretending it was being forced back at his face and ian sitting on the ground shaking his fingers at him looking very angry. id like to see it without any sound or visual effects out of curiosity.