Is "adventure" 3d... top view? or first person?...

As for the many-coders-problem:
What would be a fun task (I think) would be the coding of random-map-generation (for any type of game). Given a few parameters (percentage of land/water, density of forest/hills etc).

I don't want to make a shooter, but I think we've almost agreed on that.

http://blurst.com/blush/
This is a good game.

What I'd like the most would be something like (firoball's? was it his?) four little warriors, if I remember it correctly.
Choose you character(s), equip him/her, go and solve a mission, bird perspective. Click to move to a spot, right click to do something special at that spot (hide behind a rock/pick something up/open a door). As simple as possible. Maybe in the style of settlers 3, but 3d.

Preferably Multiplayer. I can do multiplayer-character movement (prediction and interpolation), i'd like to do it in ANet. 4 Players max would be better than 8, I think.
Something as fast and intuitive as jump 'n bumb:
http://www.youtube.com/watch?v=f8b84SrwgDU

Co-Op mode has always been the most fun to play (diablo II, halo) in any game, I think.

Edit: For more inspiration:
http://www.youtube.com/watch?v=6lKAJEzV5vc&feature=player_embedded
Simple design, yet they've done so much with it!
Lots of programming, only 2d art, still looks great... Intuitive controls from what I gather, drag-and-drop-equipping...