It was just a thought I had, getting to the last area as fast as possible. I think it would be neat to see how people do that, and it would also be cool to figure out new methods.

yes it would be cool but the game have an update every week and adds some areas. Now the solution for that is to add subcategories. tho pretty cool idea.

if you could choose what zone you speedrun to for example zone 3 it would be cool

If we ever do decide to add a full game category, it would mainly be for rebirth 1 / rebirth 2.