I think it is a very good idea. I had a lot of fun reading and trying to help @pibara edit his Ragnarok story even though I am not an editor by any stretch of the imagination.

I like to try to write, but am not a real writer, but I would love to help influence a story beforehand. So many times you read a book and think what was the author thinking.

If nothing else it would be a nice experiment, as long as you are not asking me to write a part, but just give input like : I think that blah blah blah would do this, kibitzing we used to call it in chess.