Have you seen this post discussing their future plans? EHG has not yet implemented Epoch’s Call or the Eternity Cache system.
However, in the short time that Monoliths of Fate have been available, we saw an expansion from 7 to 10 MoFs and all 10 now have an empowered version. 5 of those 10 have blessings that buff the player character and the other 5 have blessings that tailor your loot search.
I would expect more Monoliths and bosses down the road, as well as more difficulty settings above normal and legendary (empowered).
Feedback is important, but I think it should take into consideration what already has changed and what will change when projecting on to the future state of the game.