TV’s Frink said:
OT Vader doesn’t ask stupid questions like that.

Maybe in the next cut for the 4k blu ray: in ESB, instead of “all too easy” we’ll hear “what have I done ?”. He shall even say that line every time he does something bad in the OT. So, inconsistency fixed !

I still don’t buy how Anakin turns to the dark side, but at least with those terrible lines removed it looks less silly. What would be a great helper is an alternate shot where he does not cry after Windu’s death.

I wonder if it possible to edit the scene so he would just walk into the office and instantly help Palpatine by cutting Windu’s hand (just after he delivers the “you can’t” and “i need him” lines, with “he must stand trial” removed), and not sit afterwards but would rather stand and discuss with Palpatine their next move. So all the “dark side knighting” part of the scene should be removed, it would be implied that he is already Sidious apprentice since an off screen scene that would take place just after the Palpatine reveal (the “power to save Padmé” scene). Not sur it would work with the available material though.