Some people just don’t care about commendations—so they don’t stick around after duties end for them. Others don’t care to give out commendations. And other still commend less for perfect performance and more for things like glamour, character name, personality, etc.. I don’t really think that they’re the best criterion to apply to prospective mentors simply because the ways they can be given out can be entirely irrelevant to player knowledge or performance, but that’s my opinion.