Yamcha isn't even around anymore, basically just showed up for the baseball game to get his moment in the sun, only had a cameo in the manga, he's more of a comedy character. Krillin is like a little mascot cheerleader for his old pal Goku, has more in common with Chiaotzu and Puar at this point than being an effective fighter. At least Tien and Gohan were badasses and cool characters. Gohan is at least still a better human being than his dad as he actually cares for his family and doesn't just want to get into fights that will destroy planets. Honestly SSJ2 should have been the final transformation with only Gohan attaining it. Tien's DB arc as someone corrupted by his teacher to someone that rebelled against his teacher and became a hero and winning the second tournament in the series was good stuff. He also had that badass moment against Cell, he's been entirely underutilized and they haven't given him any evolution save for powering up his tri-beam. He also has actually interesting powers much like Piccolo, with his ability to grow a second set of arms and his third eye, and his clone replication thing. Roshi also was interesting in plain old Dragonball, but should probably take a backseat as a character that just shows up every so often. Tien, Piccolo, and Gohan all should get better treatment. I wouldn't mind seeing those three with Vegeta and Goku (Goku not being in the spotlight as much). If the universes get brought back it'd be interesting to see Hit, Dyspo (Hit and Dyspo could be Goku and Vegeta type rivals, I'd rather Toppo and Jiren only show up for impact), Paparoni, and the Trio de Dangers get added to the regulars. Only interested in Cabba from the U6 Saiyans.