They really should have sped up Palpatine's movements in the fight like he was operating on a while other level than the average Jedi - think the Force speed that Obi-Wan and Qui-Gon used in the opening moments of TPM. It's not him just walking up and stabbing them, it's him appearing to move faster than their eyes and brains can handle, because he's using the Force so effectively.
In Matthew Stover's novelization of ROTS he does just a sensational job of decribing how the Force feels and is used by a variety of characters - Palps, Dooku, Mace, Obi-wan - to where it really augments watching the movies and thinking about the way the book describes each character's abilities.
I still don't think Palpatine should have fought with a lightsaber at all. If he's the dark master, he should have been throwing those guys out of windows and smashing them into floors and ceilings. I appreciate Mace giving him a fight because of who Sam Jackson is, but it should have been force powers, not laser swords.