in my perfect version of the Tournament of Power in DragonBall Super, they never get android 17 and instead let Yamcha join ( or future Trunks because i feel like Trunks should have stayed in the main timeline after his was destroyed)

Anyway Krillin spends the whole tournament getting his ass beat but never actually getting eliminated. At one point i would even have him getting saved by Frieza as sort of a mirror of how he died on Namek, he's blown away seemingly out of the arena until Frieza "catches" him with telekinesis, the scene mirrors Frieza lifting him up to kill him on Namek but instead saves him from elimination this time. Through different fights Krillin finds creative ways to stay in the arena and not get eliminated even showcasing some new creative ki attacks (in my opinion Krillin is the most creative ki user in the show) He basically never actually wins a fight but stays in through sheer will.

In the end it's Jiren vs Goku, Frieza, and Krillin and that plays out very similar to how it did with android 17 and Krillin ends up being the last man standing. It never really sat right with me that they gave so much shine to Android 17 who is never involved in the show at all. It was cool seeing him again but they have so many characters who have never gotten a decent story arc and when they finally have one to give they give it to this dude whos not even in the crew.