The "mystery" for why this looks good isn't much of a mystery people
https://www.ign.com/articles/andor-no-stagecraft-disney-star-wars?amp=1
"Starting with the first season of The Mandalorian, LucasFilm has used a new technology called StageCraft which utilizes an immersive CGI screen that wraps around the set to create the faraway worlds of Star Wars. This technology has been used for The Mandalorian, Book of Boba Fett, and Obi-Wan along with other Disney Plus shows. But Andor will buck this trend.
"We haven't been working with Stagecraft at all for our show, no," says Andor executive producer Sanne Wohlenberg in an interview with IGN at Star Wars Celebration. "It is the first Star Wars show for Disney Plus that has not been leaning into that technology.""
"Wohlenberg says that the decision to shoot on camera was simply a result of Tony Gilroy's writing, which didn't lend itself to StageCraft. Instead, Andor will utilize "as much on camera" filming, combining location shooting and backlot sets.
Andor star Diego Luna chimed in on the different shooting styles, citing his work on Rogue One which he says "was allowed to be different and we kind of have the same look."
"We can be different," Luna says. "Rogue One in a way was kind of an homage to the original Star Wars, a New Hope, and that kind of very theatrical way of shooting where stuff is actually there and you can interact with that. And I think we had a lot of that on this one and it's beautiful as an actor to react to real stuff and to play the game with tons of actors.""
"Wohlenberg says that the decision to shoot on camera was simply a result of Tony Gilroy's writing, which didn't lend itself to StageCraft. Instead, Andor will utilize "as much on camera" filming, combining location shooting and backlot sets."
Finally some good fuckin' food.