yeah i kind of liked it at the beginning but when 15 mons aren't enough and an entire dungeon + boss battle + legendary battle are entirely wasted xp wise it just feels off ^^
and tbh i never found myself being underleveled and i am curious how this would even be possible (haven't used a single audino trainer yet)
EDIT: i used some audinos to train up my thief fling recycle mon ok xD