Honestly any champion with 20% + ban rate needs to be looked at

And there should be any champs who have a 60% ban rate. and both sit around 60% ban rate and Nidalee has a pick rate 20%.

Nidalee is currently at an 80% pick or ban. If the same champion is seen or banned in 4/5 games there's obviously something wrong. Especially if you compare this to other FotM champions.

for example I would say is probably the most FotM adc (other than who ins't as much fotm as she is broken). His pick/ban rate is only up to 40%, and that is the champion with the highest pick rate.