User blog comment:Healingmantra/My vision of: Evelynn/@comment-25281296-20161119080715/@comment-27802145-20161119213740

Basically all of what PS said above is true.

When the "fun" you gain from playing a champion fails to exceed the amount of "anti-fun" you impose on your opponents, you're literally decreasing the net amount of "fun" in the game, which is something you never want to do as people play games b/c they're "fun" (and let's just say the word "fun" is a very general term, but it can be usually synonymous with rewarding, and positively engaging), not "anti-fun".

If you're new to designing reworks/custom content, I recommend you have a quick read over this. It's a post where a Rioter both lists, and discusses the most common anti-patterns in games, in addition to their implications. Basically if you don't know 100% what you're doing, you should aim to avoid all of what's in that list as a rule of thumb.