I, for one, think we should be moving away from carriers and instead focusing on hardware. With that said, I suggest having two main forums for the Nexus handset divided by hardware technologies, so:
---Galaxy Nexus (CDMA)
------Galaxy Nexus (CDMA) - All Things Root
---Galaxy Nexus (GSM)
------Galaxy Nexus (GSM) - All Things Root
The top level forum would be read only where forum guides/mods have write access to provide stickies that point less knowledgeable users to the correct subforum (i.e. Links for the individual carriers that send visitor to GSM or CDMA). The top-level could also be for read-only information that is generic to all Nexus devices.
Regardless, I appreciate the time and effort of the "big wigs" to keeping the forums user friendly, and I will adapt to whatever the final layout should happen to be.