Another major advantage over the Note 3 is the non-pentile matrix display; 2 subpixels per pixel is not something you can just get away with on sizes like these.
On the other hand you're back down to earth with a non-infinite contrast ratio and you trade in a broad color gamut for color accuracy* (a matter of preference).
29% more screen area with a battery only 6.66% larger probably means this isn't going to have nearly as good battery life as the G2. Then again, the G2 had quite a bit of leeway; I don't expect it to be terrible on this.
I personally prefer the design of the Note 3.
* although this depends on whether LG doesn't calibrate the screen for oversaturation anyway; I've heard some claims that they did do that with the G2
I'd hesitate to call the non-pentile matrix a major disadvantage as the N3 screen still meets the 'retina' threshold, but I do agree that there is some room for improvement, especially with asian text. It'll take next year's N4 2K screen IMO to reach the point of no more benefit.
I wouldn't worry about the battery either, though I am a bit surprised that LG wasn't able to fit a bigger one in with their stacked battery tech (like the G2) considering the real estate they had to work with.
I have to say I really like this design - I never understood having thick bezels and then not using the free space to put buttons (like Samsung). On screen buttons just ate up more usable screen real estate. To do OSB right, the bezels should be tiny, and this (along with the G2 and Moto X) are IMO the phones to do it right. With KK having the full screen mode too, it's even better. Frankly, I really do think even Samsung is going to go this route - if not this year, certainly by next year.
Anyone know what this 'metal mesh' back is? Is it truly textured metal or is it plastic made to look like metal?
<edit> One other note about HTC and Sony phablets - as a multi-year user of phablets, I feel like they don't get it. With phones this large as daily drivers (not secondary devices), you have to do everything you can to shrink the overall package as even the Note 3 is on the verge of being unwieldy. The G Pro 2 gets it, but the One Maxx doesn't, nor the Z Ultra (though that's just way to big IMO as a daily driver). Having a 5.9" screen and then big ass bezels is just a recipe for irrelevancy.