Like the title says, I think SE should remove the mentor crown.
This is really a band-aid fix to a bigger problem, which is that the requirements for achieving the mentor status are really easy and have little to do with your experience across a wide array of content.
Nevertheless, I think it would be a positive and simple change. Mentors receive a good amount of harassment in this game, which I don't think is ever warranted. Mentor or not, if someone is being rude or just acting clownish in general, two wrongs don't make a right, and its simple enough to blacklist them and move on.
That being said, I have never experienced any kind of harassment from being a mentor. I simply just don't wear the crown. I enjoyed the exp boost when it was relevant for me, and I get a kick out of reading NN chat; that's pretty much my whole mentor experience.
You don't need a crown beside your name to help new players. Furthermore, the crown has such a bad reputation in this game(even to new players) that they aren't going to ask mentors for help anyways.
And finally, removing the crown would eliminate the portion of mentors who only got the status to have the icon next to their name.
*Yes, I did write this in response to another post I saw about mentor harassment*