I loved the angle with the Raiders. Goes to show you simply can't judge a book by it's cover, and Anakin simply jumping to conclusions and looking for ways to justify his rage
As for Boba vs Rex. Interesting thought, and a bit of a twist of an angle. My first thought was, Mandalorian armour or not, he's still a Mandalorian, so why is allowing his face to be shown? As for the age, Boba was what, 11, 12 in AotC, which is officially 22 years BBY, and this series is said to be 9 years after ABY, right? So Boba would be mid-40s?
Terrumo himself is 60 years old, so it's not a stretch. However, imdb credits him as Boba Fett, so the theory is pretty much shot.
Unless the show is trying to work the fans as well.