Why is Echoing Hatred such a rare instance?
At Paragon 240 I've been able to run Echoing Hatred a total of 3 times. All 3 times I was able to clear a difficulty slightly higher than I was already running in regular content. And all 3 times the loot was...meh. There was a lot of it, to be sure, but nothing amazing or even worth noting. This last time I cleared difficulty 94 which is Torment 11+ and I barely even got ancestral items, let alone ancestrals with stars or mythics.
So why is this dungeon such a rare run? If it gave out impressive loot, sure, make it rare. But it doesn't. It just gives you more of the meh you're already seeing. Have I just gotten unlucky in my drops and this can give some really good loot? Or is it just oddly gated content?