I love scenarios. I've been playing The Rise of Nations scenario a lot in the last few days. Its excellent. An age of discovery type scenario, extremely innovative. Makes it an entirely new game. I've just been playing it in SP though, it is designed for MP, so if anyone wants to I'd love to challenge someone.
Real maps are more fun for me than random ones. Sure you loose the fun of discovery, but it just feels right. The chinese are in china, the germans are in germany, americans are in america, all is right in the world. Everything is more ordered and historical, rather than playing on some bizarre Jackson Pollack map. If it is a quality map like Real Europe or my Real World map, then half the enjoyment is in the map itself.
The Rise of Nations scenario used a modified version of my map.

Another reason it rocks. Anyone want to play me?