Guess I'll go and try it, if only for science. DDs thus far have been so barebone that even that feels pretty "ugh" for me.
If it ends up being more of the same, then... yeah, seems like it'd be a waste of time compared to just expanding the ilvl span of the former DDs.
Which kinda sucks, in that, fundamentally or in terms of prospects, it's the among the kinds of content that would most appeal to me... if only it weren't about minimizing development costs per hour of grind produced instead of maximizing what could be done with procedurally generated environments.
EDIT: Well, that was about as disappointing as I should have expected. Just the newest skin on identical gameplay/playflow.