I think the universal challange list should be based of the challenge types knexzor and Skatehead suggested. Like a big list of basic ideas that we can all attempt, that way we can score those both by getting the challenge done as well as who people thought did it the best. Then with the spot specific challenges, you set certain tricks that have to be landed at those spots.

Then once all the clips are in, the judges calculate which team finished the most challenges with points being added based on style and creativity. Like say one team has the same amount of challenges done, they style points can push them over. This helps make judging easier while still allowing for each team to be creative