A multiple person one sounds interesting, but it is fraught with problems, such as, are other characters allowed to know the results?

So this might mean you might result in having to do PM's to give out results (which hides the story from others).

The biggest problem of such a move is the fact it will take up a lot of time doing a lot of orders. So there must be a significant time investment on your part to make it work.
Well my idea was to just post everyones moves openly, but they send me orders via PM, so no body knows whats happening really till the write up....

As for the effort levels, it would only be a small number of players like 10 max.