discussion: what could be done to nidalee to make her viable as a support?

I think the first thing you'd want to do is redesign her heal so it's not both a powerful early-fight steroid AND a stronger late-fight heal. That creates an awkward incentive -- do you use it up front for the power, or use it late for the extra healing?

You'd also likely want to give her something else to do other than heal and Q, since Q encourages her to eat up mana. I'd consider seeing if the Cougar form might benefit from some supportive ability being added somewhere, such as a slow or damage reduction ability of some kind. You'd have to weaken other parts of her kit to compensate for this power though, which I'm not sure makes it worth the changes.

Just doing some things to get her back into mid/top in general would be enough to let her support again as well. She wont be a full on enchanter support but she would have a good mix of enchanter gameplay and damage. And honestly they could revert alot of the nerfs she has received since they forced her into the jungle and maybe slightly nerf her damage to jungle camps just a bit (though they could just test it to see if its even necessary) and she would be viable. The biggest reason she doesn't work in lane anymore is because her spears are so incredibly easy to react to and even easier to avoid when you can stand in a wave the whole time. They are slow and have such a long cast time you have no time to even try to weave one in during an opening when the creeps move and the enemy makes a mistake.

She is a great support. Lovable heal, vision granting traps, and classic q pokes.