Mentor minimum requirement is too low / needs adjustment

[worldofneil]

I was able to become a mentor without leveling any tank to 60 (check lodestone)

Because you met the crafting/gathering requirements. There's two ways to become a mentor. Tank/healer/dps to 60, 300 commendations and 100 dungeon instances OR one crafter and one gatherer to 60 and 300 collectables gathered and 100 collectables crafted.