You might get a few more responses if you draw up some short scenarios, at least to get the ball rolling. Those can be expanded with the help of those who become interested by your ideas.
Or you could read some current stories, find a writer you think is really on par with what you're looking for, then PM them a short story idea.
Lastly, have you checked out the current games that others are seeking partners for? Thats a good way to get started as well.
/shrug From my own experiences here, it just seems to go a lot more smoothly if you have some more solid ideas going in.
Good luck to you!
**Forgive me...I spoke before I noticed you had a link with some ideas already listed. Not sure why you have two threads for this now though, but please disregard the above