User blog comment:Reilock/List of League's Great Mistakes/@comment-2010873-20140411044936

Honestly the only problems I have with Riot recently were their rework and balance decisions. Either rework champions who didn't need one (Skarner, Xerath, etc.) or neglect to rebelance champions with overwhelming influence in the meta (e.g. decision to change Gragas when Vi, Khazix, Lulu, and bruisers like Shyv and Mundo are far more potent)