My only issue is with the commendations because they don't mean what SE apparently thinks they mean. Perhaps it's different on the JP side of things, but here it's not at all a measure of a player's ability to help or do their job.
When they were first introduced it was nothing more than a measure of how many could be farmed in a synchronized DF with friends to get those rewards in a day. Now it seems they're typically only a show of how many people can be arsed to hand them out to the first name in the list (tank) before rushing to the exit. Most don't even do that. Honestly, I'd wager a better measure of a player's willingness to help lately would be better based on commendations given, not received.
Not that it matters really. Like another poster mentioned, I figure this mentor system will go the way of XIs, and those with the special labels will be some of the least helpful people you'll ever meet. It's a status symbol that many will treat as a trophy and because of that, I predict you'll be hard pressed to find an actual mentor-minded person in the mentor system, at least on this side of the lake.
Maybe I'm just being cynical. We'll see. Although I will meet all requirements, I don't plan on participating unless it actually turns out to be what it says it is, and not just another thing to parade around in Idyllshire.