I feel really bad for the Karate and Softball athletes, but IMO Climbing, Skateboarding and Surfing were the clear top three choice to retain from 2020. They are all extremely unique compared to the current offering of summer sports, cheap to host and have a lot of potential to grow the audience. The winter Olympics have benefited greatly from the addition of non-traditional events like half-pipe, snowboardcross/skicross, slopestyle and big air precisely because it appeals beyond the “core audience” while still clearly being sports that bellong in an event like the Olympics, and I can see climbing, skateboarding and surfing fulfiling a similar role.
No idea what to make of breakdancing, seems like an odd sport. But I actually think it makes more sense than some of the events the IOC has added recently (*cough* 3x3 Basketball *cough*).
Squash not being added *again* is a joke.