The Mentoring Requirements... *Rant Style*

[Animarelic]

As your Tank Senpai I will help my DPS kôhai know when to use CD's properly instead of using B4B right as the Boss leaves the screen for 30s or uses an AoE that will fatally harm them. I can also teach Healers when they are safe to Regen and DPS if they feel comfortable. I can also show the BLM and Bow Magus where to stand to avoid damage for maximum up time in a fight.
You learn stuff like this playing every role at least to a Basic Level. The point being I doubt anyone could face roll their way through the Mentor requirements without having some knowledge to offer you.