Another mode of play that I've been thinking for a while is a way to play solitaire as the Overlord, in a kind of Dungeon Keeper style. Playing as heroes is great fun, and it's cool that I can play solo. But I'd love to have a scenario with high replayability in which I'm managing a dungeon and it's creatures while heroes are trying to come in and break up the place and steal all my precious treasure. Some type of AI to play the heroes would be great.
Interesting, indeed. We always tought about the overlord, never the heroes. Can be relaly trick, tough. One thing is to cast an IA to the overlord, another is to cast an IA for four heroes, unless it' a lone hero game like those old books "fantastic adventures".
You can make a deck for that with cards that have 4 sections (Each class). They probably wouldn't have classes though.