In whichever motivation you wish to give Dooku putting Palpatine on a throne like that with swivel control is a bit daft.
If Dooku is really a Sith it's giving the game away and if he isn't it's asking for trouble.
Palpatine should be locked into position looking at the door.
Even as a Sith Lord he doesn't have to see the chaos of battle with his eyes he has mastery over the dark side of the Force.
It might even make sense to have the windows covered by shutters when the Jedi enter the room (like Dooku has Palpatine tied to a chair in the attic).
As the fight proceeds the shutters could come down or be torn down and the view of the battle would then remind Anakin of the chaos caused by Dooku's insurrection and fuel his decision to follow Palpatine's call to slice the Count up.
I'd also downplay saving Padme as motivation for turning against the Jedi.
It would make more sense to have him genuinely believe by the time he sees Mace with his saber at the Chancellor's throat that the secret guilt he feels for killing Dooku and the sandpeople is pointless as Master Windu is about to do the same without guilt or shame.
If the Jedi are no better than Sith he might as well be a respected Sith Lord than a disrespected Jedi.
It should be the moment he stops being the boy Anakin and becomes the decisive man/machine of action Vader.
By the time he comes to believe Padme has betrayed him he no longer cares for her either, his lust for power and revenge has eclipsed his love for her.