You’re right. It is his Episode I: Return of the Sith edit. I’m sure it isn’t the only one either. So unless there were any issues with that edit that probably proves that it could work.
Another thing this reminds me of, I think if/when I eventually do edits of the saga films, something I would really like to try and do is keep the runtime at 2 hours. A lot of prequels edits sit at 90 minutes or even less, and I’m sure there better films for it, but I guess I don’t want them to feel too short.
I guess that just might be a rule I want to follow, so it inevitably will force me to cut only the most egregious things. So at least my case I may have to keep those scenes in order to remove other bits and pieces to maintain a 2-hour runtime. Unless I kept the bulk of those scenes and somehow swapped out Sidious with Maul.