This is just a thought, and maybe I am wrong.
Lets assume Samsung designed this device with the idea of targeting both the power users and the general population...but made sacrifices (to the advantage of the general consumer) to achieve a stable, thin, premium, fast phablet. Obviously, from a financial standpoint, this makes sense. The so called "power users" make up a very small, very vocal minority that frequent tech sites. Samsung wants to target the everyday person that generally knows there are "iphones" and "galaxies". This is how they have to think, in order to grow and survive.
Anyway...could it also be possible, assuming the note 5 performs on a general level similar to or slight better than the note 4...that this was Samsungs goal? Meet the current standard of their previous note, make it slimmer, premium, and all around better....and then wait for Android M?
Think about it...if android M lives up to its goal, in which "sleep mode" can drastically increase the stand-by time of the device...what will be left to complain about? If this comes to fruition, won't the note 5 match or better the iOS device of the same size, making the everyday consumer happy? Believe it or not...looks, material, and "thinness" really matter to John and Jane Doe when they walk into a carrier store, bestbuy, whatever, and see the galaxies and iphones competing for their attention.
Just a though...