Episode 3 (Palpatine duel with 4 Jedi easy fix)
Instead of 4 Jedi going to confront Palpatine,have Mace and Anakin on there way to tell Palpatine that General Grievous has been killed and that he can now step down as Chancellor.
Then Palpatine says that he just can't do that,and the first time we see the Force Lightning is when he zaps Mace,and Mace flies across the room getting knocked out.
Anakin ignites his lightsaber and Palpatine ignites his and we see Anakin vs Palpatine.Palpatine is trying to talk Anakin down during their duel,telling him that he has the power to stop Padme from dying and if Anakin becomes his new apprentice,then he will share this power with Anakin.
Anakin stops swinging his lightsaber and is just standing there thinking about what Palpatine has just told him as there two lightsabers are sizzling as the blades are crossed on top of each other.
Thats when Mace flips over toward where Palpatine is.Palpatine looks behind himself and sees Mace flipping over.Palpatine Force Pushes Anakin across the room as Palpatine focuses his attention onto Mace.
Mace vs Palpatine as Anakin just watches.Then when Palpatine is down and Mace is about to kill Palpatine,Anakin throws his lightsaber across the room where it cuts off Mace's hand.