Many people when questioned in chat said that the benefit of doing the parkour in the Library wasn't worth it. So I thought that it would be pretty cool if that you got into the restricted section from doing the parkour you got rewarded with a new spell perhaps a curse due to it being in the restricted section. I don't know which spell would be useful to reward but i'm sure that if you read some books in the restricted section in HP you would definitely come away from it knowing some new spells *cough* tom riddle*cough* . More rewarding prizes for Parkour would definitely make the struggle of them worth it.
Thanks for reading.
Thanks for reading.