So, Frogboy says that there will be a large set of creatures. But in previous posts he said that it will be rare for players to have control of non-humans/fallen. So where are all the creatures then? In dungeons of course (or roaming the land I guess)
having played a bit of X-com I know that there is room for some pretty creative exploration in those battles. You can walk into alien spaceships and such. I have no doubt that is how the dungeons in Elemental will work.
(an important link in this is the discussion of "how dungeons work")
Anyway, I wanted to talk about critters and quests. In direct relation to dungeons I guess. I'm sure there are many more ideas from what has already been seen. (we've got a pretty nasty slug somewhere in the forums, but what else?)
Frogboy mentioned a mode that is basically an extended tactical battle. I wonder if that is an over world battle, or perhaps a special "dungeon crawl" where you take a few heroes and thrash a dungeon. In such a case I imagine a dungeon with many quests directly linked to tasks inside the dungeon. Perhaps a multiplayer option as well where players (each in control of one or two heroes) form a party for the dungeon.