Am I the only one who thinks the elite four and champion should have Pokemon at levels between 90 and 100? I know that sounds too tough, but the elite four and champion just don't feel so "elite" when they don't battle with the highest leveled Pokemon plus you have Exp. Share so leveling up won't be so tedious.
That would've made completing the main storyline too hard imo. The Elite Four's Pokemon's levels were fine the way they were in my opinion.