I had the idea of a new style of map for future expansions that is different from normal or waves. This type of map would be an insanely long hallway (almost like maus but stretching out in one direction), with mobs that scale to 81 or whatever the cap is at the start of the map. The map is divided into sections (like the barriers in hauntlet) by mob level, with a boss at the end once the level gets impossibly high (100 or 110 maybe).