Is jungle diversity dead?

From what I've seen so far, high sustain junglers are all the new rage and as a jungle main this worries me to no end. Maokai, Fiddlesticks, and especially Warwick all perform exceptionally well and arguably downright better than most other champs that are supposed to jungle. Champions that need items to be effective in the jungle(namely assassins) are screwed over by the new jungle by the lack of income from jungle items, while low sustain junglers are also screwed over by, you guessed it, lack of sustain from jungle items. (RIP Diana ;.; not that she was all that great a jungler to begin with I suppose, but still my main, who falls into both categories) All the while high sustain junglers can gank, go in the jungle, come back out, gank two or three more times before having to back, while junglers with little sustain gank once or twice then have to b because they can't even fight their own jungle camps(a bit of an exaggeration for some champs, but you get the idea). TLDR: The new jungle doesn't seem to be healthy for the majority of champs who go in the jungle, only some of them.