Today i used for islands Demonic appetite, and it felt great, i think as a demon hunter, it should be kind of a passive instead of a talent that is in the same row as blind fury.
In Legion we could use both of them, but somehow they got now together in talents in the same row. I think Blind fury is the best but maybe if we had this Demonic appetite as a passive, it would be better to even control our fury. Felblade and Blind fury yes i accept they are in the same row, but demonic appetite is not that great to be chosen alone unless it's like for islands that you know you'll get a big amount of souls and you'll get fury and procs frequently.
We have this nice things that we don't use, i feel something is missing, even more without fury of illidari.