Single Player Quest
Something that you can achieve without going to multi. Some things that i could imagine for now is a bit tweaking on modmaking to put a starting point and finish point and label the mod as parkour mod. So we can make a quest where you finish X different parkour mod or something in a Y days.

Player Quest
A quest that made by player where the prize could either from here or provided by staff (for the latter, you could make approval system by ES to get funded by ES)