The durability of Beskar seems like it's going to be an ongoing plot point. What's going to happen with all of that armor that was left behind on Nevarro? The Armorer no doubt will have some plans for that. And having seen how much punishment Beskar can take in this first season, it makes one particular character's survival seem far more plausible.
BUT....
There's a character in the Aftermath series of canon novels who lives on Tatooine and has acquired a suit of Mandalorian armor. That character's name is Cobb Vanth, and his story (if the timeline is accurate) takes place around 4 years after the Battle of Endor. The novels didn't indicate with any certainty if Vanth's armor was the salvaged armor of Boba Fett. This was one of a number of subplots in the Aftermath novels. Whether or not it leads to anything linked to this series remains to be seen. Given Dave Filoni's role in the show I can see the potential for him to explore some linkage between print media and the series. From what I've read George Lucas stated that Boba Fett escaped from the Sarlacc, but declined to show that in the special edition. So this might be an instance of Favreau and Filoni carrying the torch forward and exploring that angle.