That's an idea, silly Tiger. ~Spanks~
I meant in regards to coherence and story, it is nice to have the players plot it out amongst themselves but I've usually found to have a direction present can do wonders for all those partaking. ~Nodnods~
Meaning if there's any way we can all help you come up with something, let us know!
For me, it is a crossroads nexus point where many dimensions and worlds, times and places etc all come together. That is one simple sentence and one simple plot.
The possibilities are as endless as there are possible dimensions, that's why it's free form and loosely engaged, intentionally. One may enter a character and then a post and the other says... oooh, I like that one and collaborates with them to join in.. and so on with all the members that wish to play. I have a more structured game down lower, this game is about maximum ability to be and play what you want, when you want, where you want, with who you want and how. lol..
You could create a character or more, setting for him/her and find them selves suddenly ripped out of it into another's or you can pull someone from theirs into yours or meet others in yours already.... Doing that for your maximum expression and creation aaaaaand fun would be a great help!