The Vanilla D1 Loot Cave or even Loot Cave 2.0.
More social than the tower, guaranteed loot, public events and “Enemy is moving against each other”, no loot or material cool downs, and unlimited XP.
The Cryptard was the one thing that kept us checked.
-
Loot is already easy enough to get so there isnt really a need for a loot cave 2.0. Enemy is moving against each other is already in D2.