I would love a Dungeon of about 10 nodes (like a shortened Dungeon of Books or something), but what makes this different is we must complete the dungeon with each of the 9 elements.
So, first off, we go through the Dungeon with 3 fire monsters, then 3 nature monsters, then 3 light monsters, etc..
I love the idea of some kind of formula used to calculate our score on each node (damage given x damage received x time to complete), so we can compare with other players on the global leaderboard for each node.
This could be the Dungeon (or 9 Dungeons if you look at it that way) that we've been waiting for for the weekend!