I'm not opposed to releasing part of this under the OGL -- after all, our contract with Mongoose references the OGL and compliance with it. I am also okay with having multiple people chip in to provide a complete ruleset + library modules as well. My primary concern is that the final product is complete and up to or better than the standards set with past rulesets, that all developers contributing to the project receive the proper acknowledgement and compensation and that the Publisher receives full royalties for allowing us to produce work under our license.
I can divide out developer percentages however we need if there are several of you willing to take it back on and complete it.