Just to play devils advocate here.. it appears to have 3 of those 4 things.. although I suspect by much better you mean like days.. like physics bending better?
I don't actually think this is designed to attract S8 owners anyway, beyond early adopters.. I mean Apple have done just fine with a tick/tock kind of thing and as I've said before.. where do you go with all screen?
Similar to cars, at the start there was all sorts of crazy then it settled down to the basic shape and layout we've had for 50+ years.
I'm afraid we're near there with phones.. they're glas and aluminium slabs running 1 of 2 operating systems so scrap it out for incremental bumps in camera quality and nonsense like siri/bixby/animoji etc
Yes, I mean days, tired of everything else improving but battery life always staying around the same....
And no, the tech. is there, been articles about some new tech over the last few years where battery can last for ages but won't be used due to cost and not being to mass produce it or something along those lines.
And yup I don't disagree but at the same time, I'm sure some day, there will be a new big thing i.e. I think the next big thing for mobiles will be an all in one type of thing i.e. a bit like what Samsung are already doing with the dex/desktop system and having the phone be your main system, I can see this being the norm come a few years down the line, long gone will be the days of laptop and desktop PCs, instead (at least for the "average joes" out there), place your phone in a bay or something and have that as your "media/gaming" etc. "PC" but we are still a long way of that.
Oh and foldable displays.....