Honestly… this could be kind of cool as an “end game” feature where it would send you to a random area with buffed mobs that counted as a level 85 areas. Just use the existing map gen.
Would still feel like D2… but offer something similar to “maps” from the mods.
I mean that was the biggest issue I had with the mod servers… it didn’t feel like I was playing D2 in the endgame.