As seen on CNET Korea, battery might still be user-replaceable (in Russian, with link to Korean article). Hope that’s true. Nuclun 2 probably to be implemented in LG V10 successor, not in LG G5. But even then, LG V10 will satisfy needs of mine with nothing omitted except maybe xenon flash. If only it were more widely available in Europe, where I currently reside. Did you try it? What use for yourself had you find in second screen, if any? It somewhat reminds me of these additional dynamically changing software layers of keyboard on Blackberry Passport, tightly integrated with physical 3-rows keyboard in system apps.