I have the Galaxy Nexus, and never loved the screen, too dark, sucks in sunlight, and gets oily way too easily. I also have the international One X, running CM10, and it is way ing better. The One X display blows the Galaxy Nexus out of the water, and the battery life from the newest CM10 Nightly's on my One X, now surpasses my Galaxy Nexus, by a good 1/3rd on same use. The standby battery life on the international One X, is way better than my Verizon Nexus.
Saying all of that, if this new LG Nexus 4, is closer and better to the One X over the Galaxy Nexus, then Google have sold me. I like the LCD screen technology better than pentile. And the hardware in the new LG Nexus is a massive upgrade over the G Nex too. And battery life just has to be better, hard to be worse than the Verizon Galaxy Nexus battery, which blows.