Well, there's nothing stopping YOU from extrapolating what's in the codex and working on it if you're creatively inclined. The worst that would happen would be that it gets rejected, but hopefully would enjoy the writing process. If you don't get some satisfaction from putting text down, stop. I'd suggest a small one off encounter first before taking on any big projects.
Or you can pay an
established writer to give it a spin. May not get into the game regardless. Yes, I know what you mean about the Vanae. And then there's that tease at Vava Groom...
And as for ideas and being special, Fenoxo really, really likes bimbos, Savin really, really likes anal, Wsan really, really likes 'Taurs, Nonesuch really, really likes submission and dominance themes... I'm pretty sure QuestyRobo likes big dicks... I'm not 100% certain what really gets Couch off, but I'm still investigating!