Your made-up requirements just sound like you want to be a mentor and you do not meet the current ones.

As for your 3 different mentor model, it's counterintuitive for the following reasons. Your rotation, especially as DPS, is very different from your lv 52-60 skills, and with cases like BLM, completely redefined. it's completely unnecessary to have a mentor instill a level 50 rotation into their pupil, having the pupil think that that is how their job will behave in the future, and when they "graduate" (for lack of a better word) and get a new mentor, they'll be told "hey, remember what that guy taught you? Yeah ok, throw that out." The second reason ties in with the first one: why be bouncing around multiple mentor branches when you can have one that fits the entire bill? It sounds like a lot of unnecessary work for SE instead of implementing one "end-all-be-all" mentor category, just because you don't meet the current requirements and insist that you should still be a mentor.