Creative Commons
The Creative Commons parametric license regime is a more flexible alternative to GFDL.
The Green Documentation License expected to be a Consumerium License may actually fit within the parametric options that the CC license provides. Thus, the GDL would *be* a CC license, but it would not be a GFDL license.
It is also possible that the GDL could simply require certain Invariant Sections and other Secondary Sections and citation in full, which might actually be possible under the GFDL or some future variation of it. By permitting these, the GFDL is in effective also a parametric license, but, there are ideologists who oppose this, and will probably destroy the integrity of the GFDL regime in the long term by demanding that everything "be free", meaning, you can change "X is a Nazi" to "X is not a Nazi" and no one who was involved in exposing X as a Nazi can even object. This is, in a word, stupid.
It's possible that all three licenses will specify terms under which material licensed to one can be released under the others. The Green regime would be the most restrictive, and probably sufficient for Consumerium. If not the even more restrictive Consumerium Software License could be applied by CGO.