We’ve ascended beyond OT purism now. We’ve gone up to 1977 purism.
But in all seriousness, I think something is lost when you only view Star Wars 77 in isolation. It’s neat to look at how far the characters come from the start of that movie to the end of RotJ, and the two sequels recontextualize the original in a way that adds more depth to the story imo
I would also consider myself as an 1977 purist i find the idea that the Emperor is not a Force User or a Sith fascinating that there are no great Force Powers like Force Ghosts or Force Lightning
the only change i would make to the 1977 movie is that Obi Wan no longer disappears or he becomes a Force Ghost i would make him died naturally killed by Vader in battle well maybe this wouldnt be Star Wars anymore but i find the original concepts of the 1977/ANH movie fascinating maybe in another Timeline Star Wars is more different