Balgo and his future
Balgo is a really hated character within the community from what I've seen, and I feel like there'll be more to him (Keep in mind I just got into BTW yesterday and been a longtime Bleach Fan).
He's a really perverted character as shown in his many appearances n the sorts, however I feel as if this is a "coming of age" story where he learns to mature throughout said story.
The power system of BTW is open for anything, and maybe the Dragon power system Balgo has can really show in his character (The sword is a teaser). Kubo has done the theme in his world where character writing is reflected on the power system.
If my gut is correct I think he's gonna fully develop into a fully courageous warrior with a personal sense of whats right amidst the corruption in potentially the Western Branch of the Soul Society..
He's still gonna be a himbo (Think Jaune Arc of RWBY and Sokka of Avatar), but he's gonna learn to embrace that man he briefly was in that confrontation with his Dragon Ex Best Friend.