please bring back hard mode/optional dungeons

[vetch]

I suspect Variant/Criterion dungeons are the evolution of these optional dungeons, so I wouldn't expect to see them return.

Neither Variant which is soloable by design nor Criterion that's hard enough to make some Savage floors blush is a solution to the gaping chasm left in the middle difficulty range by the discontinuation of group-required optional dungeons. And neither contributes to making Expert Roulettes exciting again.