I feel there should be a any% category for the octo expansion that allows skips. You obviously wouldn't be able to skip every level since you need to pay cq points to lose and skip. This would allow for a shorter category that could more easily be speedruned. You would need to plan out which levels to do, which levels to skip and what weapons to use on what levels though.

I actually made a thread just about this very topic. TonesBalones said himself he would add it as a miscellaneous category! And yeah it would definitely be a bit different for the route if you still want to go fast. Might try to create something later.

https://www.speedrun.com/splatoon2/thread/zht8k