Deep Dungeons having vast swathes of chaff floors before to get to any challenging part of the run isn't a minor problem. It's a straight killer for the mode. Not a single one of the M+ crowd of friends who got me into tab-targeting trinity MMOs would put up with that... including me.

I have very high hopes for criteron dungeons after the live letter. I doubt that it will perfectly fill the replayability niche, but it's a vast step forward.