pickrate represents a lot more than just power - namely popularity.
Thank god you guys at Riot understand this. Some others tend to forget people like to play what's fun in a video game, regardless of power.
we do want a diversity of champs. We do want a wide variety of champions to be played so that each game is different from the last.
Is there inherent value in trying for diversity? If it's easy to achieve, then sure. Otherwise, IMO it's better just to let people play whatever they find fun repeatedly, rather than forcing(by making less popular champions stronger) them to play different picks.
pro is an exception where pick rate is used due to a mixture of sample size limits and the fact we general consider that pros prioritize playing to win much more than to have fun.
This is an impossible task tbh. But I guess it's the best you guys can work with. But even ...