I WILL say that Samsung did good by the build quality of the Note 4. It looks a lot nicer than the Note 3 as far as materials and design. Will I get it? Probably not. I swore off Samsung phones after my Galaxy S4. But who knows? If it's absolutely amazing, I may give it a shot. I'm definitely not a fan of the under-saturation my G3 tends to have, as well as the random freezes that require a battery pull.
One thing is for sure, I'm not jumping ship at launch. I'm definitely going to wait a bit after it releases to see the issues people have with it.