I think a new sub category would be to speedrun starting a new toon, getting a doodle and max all the doodle tricks. It sounds like it would be fun and wouldn't take too long especially tricks have higher accuracy compared to TTR/TTO.

This wouldn't work because you can't get all doodle tricks right off the bat when you make a new toon, and even if you could it would actually take quite a while, probably several hours. There are 8 tricks total and you would have to make your doodle do each of them 200 times successfully to max them all. You would also need to get a doodle with very good traits such that they make it more likely to perform tricks (i.e. rarely tired, always affectionate), but they cost around 6000-7000 jellybeans. You could get one from Toontown Central for very cheap, but it won't have good traits at all and you'll just waste a lot of time due to a much higher number of failed tricks.