Sorry but I will be rejecting this course.
What I like about it:
I like the theme as I don't think a Hot Air Balloon Parkour has been done well before. Correct me if I'm wrong.
What I think could be improved:
The build is very simple and plain. I think more can be added to make it more detailed. I wouldn't start from scratch. I would expand on what you already have and tweak the build. Unless you feel it is necessary to be able to get the most out of this theme.
Thank you for submitting this parkour. I hope to see more in the future.