There's something that no one has clarified here.

The mentor system works as intended, just not globally.

In japan, the mentor system works as intended because of japan's culture. There are far more...sucess stories (for a better lack of word) than there is bad one.

The mentor system for NA/EU doesn't work here because of our culture. We're too individualistic and no thanks in part due to the reward associated with it, some are in it just for that. And so you find that there's basically 3 types of mentors here in NA/EU:

-The ones that really want to be mentors and the rewards are an afterthough
-The ones who are in it just for the reward but take heed not to involve themselves too much with the mentoring.
-The ones who are in it just for the reward and take pleasure in abusing the system.

The issue here is #2 & #3 outnumber #1. Unfortunately, this is something YoshiP fails to acknowledge properly because changing that very system would be equal to admitting that NA/EU makes the system look bad in comparison to JPN. Actually reworking the system properly to fit with out culture sends the message that we're too selfish of a community and the mentor system need policing. That's not something SE would dip their hands into if possible and thus would rather encourage reporting so they can deal with situations like these accordingly.

Its unfortunate what happened to Selova's friend and, mentor or no mentor, no one should ever treat someone like that. But we are 4? years into the game and this coming february will make the mentor system 2 years old. Despite the continual feedback that mentor system is not generally working as intended in NA/EU up until now, YoshiP has maintained the position of captain of the sinking ship steadfastly and I believe he'll continue to do so until the Japanese community makes the same noise as we do.