What type/genre of anime consistently disappoints you?

Does anyone have a type/genre of anime that you find yourself drawn to yet consistently end up being disappointed when you watch shows of that type? If so, why?For me, it's the magical battle school type of show. I feel like that format has a lot of potential but is rarely utilized effectively. If done well, it basically gives you an excuse to have a bunch of characters with interesting and unique powers all in one place. The school setting naturally lends itself to having large ensemble cast. Also, it creates a plausible excuse for teenage characters to be involved in the action instead of adults.My Hero Academia is one series of this genre that I think pulled it off properly. There are tons of characters who are all basically likable even if some of them haven't gotten much panel time yet. There are tons of unique and interesting powers. In addition, all of the students involvement in dangerous conflicts has seemed rather plausible. http://ift.tt/1rWiDHb