Regardless of the requirements, people would grind them at least for the status symbol they perceive the BK crown has, and not because they wish to be helpful or because it supposedly proves they know what they're doing.
Thing is, no matter what, I doubt anything would change for one simple reason: In NA and EU, the whole concept of being a competent, nurturing guiding individual, to those still learning the ropes is not as common as it is for the concept of Kohai/Senpai.
SE can try some things I imagine, but I don't know how much they could do while the cultura difference just renders the entire mentor system an absolute joke in the West.