I don't like the idea of one turn/day because that implies that the collaboration between players will take at least 24/civs hours to figure out what they are going to do. The more civs you have the more realistic it would be, but who says that there are going to be that many civs in one multiplayer game? Unless you are saying that the most time that all the civs can take is 1 day.
They could just limit the number of civs down to 16 at max, then with 5 players/civ thats 80 players which I think is a lot of people to be playing one internet multiplayer game at one time, and who says that they are going to be playing the same game? (see my prev. post about having more than one game) So at a given time, there will be 25-30 players at one game, about 2/civ. only a little negotiation will be needed to decide what they are going to do that turn(even less in the earlier parts of the game before you meet up with anyone) which means that one civ's turn wouldn't take much longer than a few minutes. Times 16 civs resutls in one turn takes no longer than 1 hour (it might approach that eventualy, but by that time you should almost be done with that game). A limit to each civ would be 30-45 minutes per turn, after which it automatically switches to the next civ. But that's still 12 hours if every civ takes 45 minutes to decide what they are going to do.
They could just limit the number of civs down to 16 at max, then with 5 players/civ thats 80 players which I think is a lot of people to be playing one internet multiplayer game at one time, and who says that they are going to be playing the same game? (see my prev. post about having more than one game) So at a given time, there will be 25-30 players at one game, about 2/civ. only a little negotiation will be needed to decide what they are going to do that turn(even less in the earlier parts of the game before you meet up with anyone) which means that one civ's turn wouldn't take much longer than a few minutes. Times 16 civs resutls in one turn takes no longer than 1 hour (it might approach that eventualy, but by that time you should almost be done with that game). A limit to each civ would be 30-45 minutes per turn, after which it automatically switches to the next civ. But that's still 12 hours if every civ takes 45 minutes to decide what they are going to do.
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