Random points I thought of, no particular order:
-Eden was hype as fuck, the tutorial after killed the momentum. Imo, it wasn't even the fact that it took too long; If it was 5 minutes long it would have killed the hype. I don't think it should return next year.
-Collab map too hard and maybe took too long. This is partially due to the nature of collab maps tbh. Everyone wants to make a memorable, creative jump. Memorable creative jumps are hard to make, especially if you are trying to limit the difficulty, because most easy jumps have been done before. Maybe next year anything over T4 is made a bonus? Idk if thats a practical solution.
-2 player races can work, just make sure the jumps arent too luck dependent,and the players dont wait for each other. Zike/Gato run on nbn was a good example of a race that worked very well, from a viewers perspective.
-If you do end up getting a larger timeslot next year, try to showcase more variety. Maybe have an engineer race, only seeing engi in one short clip of a jump movie was a bit disappointing.
-Despite the problems I still think it was a success; the community helped raise money for charity. Even if the viewers could tell things were going awry, I dont think they cared too much.