Scarizard on Twitter: "It's intended for some junglers to have to back after 2 camps."
https://twitter.com/RiotScarizard/status/535676890275524609
I don't think Riot realizes that any champion that has to do that just won't be played as a jungler because of how much of a setback that is.
Why even play

when they all struggle to do even 1 camp by themselves safely and effectively? You will just see nothing but
because they can clear efficiently, safely and are barely affected by the new jungle.
I understand its supposed to be hard, but I don't see the upside to the 5 listed above besides maybe Rammus for having to go back constantly in the early game when the others I listed can gank, farm and use the items better than all of them while also being safer and better at dealing with the new jungle in general.