I just tested this out. I am very sorry, but there are some errors in the making.
1. Some of the jumps are not possible. Such as the 5 block jumps, and 1 of the piston ones.
2. Needs more detail!!!!! This build has absolutely no detail!
3. You ask for barriers WAY too much!
4. There are already a lot of parkour maps, so I doubt it is going to be accepted.
5. This looks like it was made in about 5 minutes. Builds need time. You CANNOT just build a parkour map and expect them to add it. It kind of looks like a parkour someone would build at their plot just for fun.
6. I think the idea is good, partly. We have a few maps just like this one, in a way.
7. It doesn't look like you watch American Ninja Warrior often.. This looks more like a wipeout map to be honest.
8. SLOW DOWN WITH THE PUNS!!! "Door-a The Explorer"? I mean,
. Sorry that was just for fun! Your puns are great!
9. When you post something on forums, it has to be done. I don't think this was intentional, but I recommend posting it on forums when it is done.
10. I couldn't test out some of the stuff like the trapdoors and buttons, but those were a bad idea. Not the buttons, the trapdoors. This map would cause a lot of trolling.
11. It could be a little easier. I mean, I personally am not good at parkour, and I could not get all the jumps, so I had to grab MC_ProYT do to them to test them. I knew some of them were not possible though.
12. I recommend taking away your heads and replacing them with a ninja head or something. I don't think people would like to step on your head and rather a ninja head would be better and more fitting. And NO, don't change your head to a ninja skin!!
I am not trying to be mean or anything, and I know people have done this to me when I post MC_ProYT's maps, but I don't mean to be mean, if that makes since. I used to think that this was being mean, but in a way, it is being nice. I am telling you what your ups and downs are so you can fix them. So don't be mad and be happy. If you work on this map a lot more, there will be a good chance it will be accepted!
Of course, I do not make these decisions and iiJam does, so I am just giving you feedback. This map could be a very successful map in the future. I love the idea and would love to play on it, as long as I do not rage too hard! This probably took you like a year to read, but if you did read the whole thing, then start working on that map bro! I hope this helped!