I had an idea for a new category extension:

Complete the game up until m-1 Take the secret exit Go to the mushroom house and get a mini mushroom Go back and complete all previous levels with the mini mushroom Complete the rest of the game with the mini mushroom

We could also do it with other categories like mini mario warpless and max%

This could be a good idea for the New Super Mario Bros. 2 Category Extensions board. I would recommend posting there as there's almost no way this can ever be on the main leaderboards. I also highly recommend having a video of you doing a run of this category idea before requesting it there.