I founded that the mentor match has a low difficulty, like 20 to 30, so the mission isn't that hard, and if is there an antagonist, the enemies are dumber and weaker (2 hits and get rid of a big elite)... I played a lot of mentor match lately, and if I feel that I don't want to play it on certain levels, I just click cancel when popup... What I would change is not let antagonist in mentor matches, and if you lose the reward, this one doesn't disappear, maybe a +20% in the reward chances... and some extra gold... I'm not the best player in the game and I was scoring from 7 to 9 in mentor match, with a lot of laughs, and 1 or 2 baby Harecs doing their stuff...