My idea is to compile all the bosses and monsters of the game into one epic mega dungeon. Say the start of the map is Balefort, you run balefort monsters for say 100 or so and kill the toughest balefort bosses. Then it goes to Lost expedition, ect.

There will be 3 maps in this pack. A level 20-30 map. A 30-40 map. and a 40-50 map.
All will be the same exept monster and boss difficulty. Drops depend on the dificulty of map your playing. So if your playing the 20-30, once you get to keeper, you wont get drops any higher than 30.

The level 40-50 dungeon all monsters will be hard. So there will be no massive clearing than it getting difficult.