What will happen to the Novice Network?

[Pence]

The mentors are there to assist the NEW players. It will make no difference to a leaf whether a level 60 or 70 player helped them.

Mentors don't only assist new players; they are also there to help returning players. Many of which are 60. Setting the mentor req. to 70 will ensure the mentors have enough general knowledge to answer simple leveling questions and help with the content.