When working on something seriously, it's not easy to start thinking ahead about collaboration. Also, good mods take time to ripe, like wine. When working with several people before you've reached a consensus with yourself is asking for trouble, of course.
Also, given the high standards that have been set, it can be hard for people, in this day and age, to actively produce a high-quality campaign without a lot of experience.
I'm sure there will be enough people looking for a good writer though; Just will take a while before serious requests can and will be made by people, of course.
- JC