The Galaxy Nexus over the previous Nexus-S, was a night and day major upgrade, but the Nexus 4 over the Galaxy Nexus, seems almost a downgrade, yeah the internal hardware is way better, of course, but a Galaxy Nexus running Cm10.1 still is pretty slick and very fast.
here's hoping the Nexus-Five is much nicer, and not another LG product.
Nexus 4 is a *huge* upgrade over the Galaxy Nexus. Unlike you I actually have both of them - it's no contest. N4 blows the GN away on every category. Battery life is better, screen is better, touch latency is better, performance is better, camera is better, GPS is waaaay better. There's not a single aspect on which the GN wins. Not a one.