It is all about preference. What gives you phone envy? Is it screen size? Process speed? Black blacks? True color replication? On screen buttons? Physical Buttons? Capacitive buttons? Material? Feel in hand?
Unless you are very unique, there is going to be some compromise. I will admit, as much as I love the screen on the DNA...I'll do something on my wife's GS3 and I long for the dark black of the SAMOLED screens. It only lasts until we are both outside and the brightness of the DNA screen allows me to hold my phone normally (not cupped in shaded or close to face). While I like the DNA size, I have to admit that I prefer the size of my GNex. I would really prefer a Nexus experience, but I am not willing to leave Verizon. Compromises all around.
I think the DNA will be the first phone in many that I will keep for the length of my contract. With Google transitioning to the service model, I believe the features that a new phone would have provided in the past will come to the DNA whether VZW provides any software updates or not. Although Blinkfeed is kind of cool, it doesn't fit my current workflow and I use Action Launcher so the Sense 5 launcher does not matter. Zoes would be awesome, but I'm not convinced that they will come with an update. Samsung's gesturing features do not appeal to me and although I think the upcoming Motorola devices are likely to be awesome, I doubt they will come with a killer feature that will draw me to them.
Steve