Instead of nerfing the jungle
The jungle is nuts. First clear as freaking Rengar I almost died to Krugs, and I had taken every other camp on my side of the jungle. So, I recall and finish off the big Krug. Then, at level 5 I am invading the enemy jungle and once again almost die to Krugs. As Rengar, the jungler who at current is considered the best. If Rengar is having trouble, champions like Nocturne and other jungler a lacking damage and aoe along with sustain are going to never be able to survive in this jungle.
The new jungle heavily favors champions like Rengar, so unless you plan on gutting him (please don't I main him) and others like him they are going to continue to own the jungle. The solution is so obvious it's kinda strange you haven't considered it Riot, buff the other junglers, and then we'll see less of Rengar, Lee Sin, and Kha'Zix because they are the only kinglets with a prayer to survive in the jungle.
While I do think you guys at Riot are a good bunch of people that get shit on way too much by the community, I got to be honest, these decisions with the jungle are wrecking this beautiful role that I enjoy so much.