This is ultimately a technology question.
A couple years ago I wrote a game called Rockistan
for some friends and co-workers. The idea is that you're in a newly-democratic country, and you must bring the Rock to your people. The core of the game feels solid, although the rulebook and specifics need serious rewriting/thinking. Every week or two each player hands in orders which consist of a move for each of 10 turns, you have a number of different things you can do. There is a random element with modifiers for each move, depending on the state of your band and its members. The outcome of each move is interpreted by the GM, who reports the results to you. Role-playing mostly occurs in the context of correspondence with the other players via in-game messages or e-mail (as well as public postings).
How difficult would it be to create a web form that dumped each band's moves into a database which did some of the turn processing automatically? How difficult would it be to have each band have an individualized form, with different options available depending on what the band's status is. Ex: some bands may be able to book gigs at certain clubs, but not others. It would be best if only available clubs showed up.
I don't see this as a MMORPG like The Rockstar Game
, but rather a 6-20 person Play By Mail game, and it would be nice to be able to introduce new people relatively easily by just pointing them at the form for their band.