Nidalee's problem isn't her offensive power at all...
It's her safety.
If it felt like there was ever an ACTUAL opportunity to kill her, ever, without her saying "shit i fucked up lol" and dashing away 2-3 times at no cost then healing back up, then her offense wouldn't be so horrifically annoying.
As it stands, she forces the lane into the uninteractive pattern of, "Either I snowball, or we both AFK farm. Period."
And it's NOT HEALTHY. Why do you think people hate Zed? You're IMMEDIATELY put on the defensive; There's no kill potential for you, no chance for you to punish their mistakes - it's just all about you having to go the extra mile to not get killed repeatedly.
Nerf her hop (when she's using it to escape, rather than engage) and replace the heal.

to be massively overrated. They both have skillsets that are amazing before a fight starts and nearly worthless once an initiation has been made. Getting a hard initiation on a Nid or Blitz team in a 5v5 teamfight is nearly a guaranteed win if you don't have a massive gold deficit. You don't even have to kill Nidalee once a fight starts; just kill her team. Who cares if she can always run away, she's not gonna defend that inhib turret 1v4 or even 1v5.