I just started play testing Deluxe Basic Role-Playing which is to be published by Chaosium sometime this year in 2008. So far it looks very good and very flexible – able to work with a variety of genres and milieus. So far we have received perhaps half of the test and it comes in at a whopping 340+ pages. Of course once formatted for publication it will probably not be so voluminous – the font will be smaller I am sure and laid out in multiple column format.
In any event the rules provide many options for different styles of play and settings. I’m just hoping that we can publish materials for it can be published under some sort of open-license.
I suppose the only advantage to using one of the two to publish supplements would be that as part of the open-source license you would be able to slap their logo on your product which frankly isn’t much of a selling point.
And finally I am thinking about creating a completely open-source or creative commons licensed and compatible version of rules since game publishers generally seem to be very uptight. As far as I know you can copyright a publication of the rules, the words used to describe a system, but the system itself cannot be so controlled. And I seriously doubt you could get a patent for it either.