When I was running all tasks I noticed pretty quickly that the stunt task for each level gives you way to much time and I end up sitting and waiting for around a minute. So for all tasks+ I had the idea that when you reach the stunt goal you should be allowed to quit the task and have that still count as completing the stunt task. This would make the category even faster and make the stunt split more important to execute well.
When I was running all task+ I struggled to remember which tasks I did and would often delete runs that missed a task or did the same one twice. I really don't think the routing differences are significant enough for it to save much time.
I think adding more freestyle categories would be fun. For example, a fun meme category could be fastest to out of bounds zone. Also when I was younger me and my friends would try to get into the hot air balloon basket without dying in the wells level. I think level specific challenges would be fun like fastest to get into balloon basket or fastest to backflip into basket. I don't know about the other levels maybe somebody else has a suggestion. J just think the freestyle mode is the best category for this game and more challenges would be great.