A lot of my opinions have already been reflected in previous posts, but I’ll share a critique and a compliment.
I know it is a cliché, but I think Boba’s character change could’ve been better explained, and been interesting, if he got amnesia while he was in the Sarlacc. I know Legends had this idea that sarlaccs could assimilate the thoughts and memories of their victims, so there could’ve been a lore explanation to it. So when he wakes up in the desert, without his armor, he has no idea who he is or how he really got there. Then he begins living with the Tuskens and the story could play out similarly.
Amnesia is a cliche but it would work well in-universe. There is precedent with Bor Gullet, Bodhi Rook certainly appears to have some memory loss from being exposed to that monster, and it seems pretty similar to the Sarlaac.
Maybe a fan editor might be able to get some milage from it. It would explain why he thinks his armor might be in the Sarlaac, and his voyage of personal rediscovery could also put a new slant on his declaration “I am Boba Fett”.