The Villain ROM is another great ROM for your GSM Galaxy Nexus, can be overclocked to 1.35Ghz with pretty much stock apps but optimized for better performance and battery life.
I can clearly see improvements over stock ROM (as most custom ROMs) and this is coming from another great ROM developer. I’ve used this ROM on many other Android smartphone so this might be a great ROM to get started on.
Try out this ROM and let me know how it works for you. Make sure you overclock it using SetCPU app (or similar) and set it to “ondemand” or “