Jungler has been nerfed
jungle items don't do additional damage to monsters now, there aren't anymore conservation stacks for extra gold, and none of the jungle items give mana or health back for damage delt which means....
Your clear times are slower=less gold, no bonus gold=even less gold, you have less sustain and ability to gank= even less less gold
There are a couple junglers benefiting from the power loss of other junglers mainly these 3 i think.
WW WW Lee Sin WW WW Lee Sin Lee Sin Lee Sin Shaco Shaco Shaco
Overall, I feel the jungle experience is more boring. Maybe it takes so more time getting use to, but instead increasing the amount of characters that can jungle it's just been concentrated to what champions have been nerfed the least by the change.