Hello there, fellow map creators...
I will now be running a map 'Trial and Improvement' system, which will allow for you to receive constructive feedback from me - regarding your parkour maps!
Situations where I can and can't review your map:
Can
When you have not submitted the map before.
If...
I think you should join games through signs. Either to play with overpowered, standard or basic chests. Certain maps only apply to specific chest games; for example, the small, easy-to-be-shot-off maps cannot be played with overpowered chests.
Sorry, but for me this just reminds of skittles parkour (http://forums.minevast.com/threads/skittles-parkour-hard.3655/), because the type of problems that your map faces are similar to it. I reccomend that you look at what feedback I gave about it. The feedback that I am about to give you will...
I think as well as increasing the spawn rate on op chests, their power should be too. In op chests people normally go straight out and attack, so if really op bows were added it would definitely mix up the game!