My dream phone is easier to make. Start with a Note 4. Get rid of the hardware keys, add HTC boom sound speakers, put the iPhone touchID on the back below the camera and have it running stock Android with the ability to run any 2 apps at once with note taking features. And maybe get rid of the SD card for 128GB of ram but why not keep the SD card in for good measure. And it has to be compatible with Gear VR.
So even if Samsung used the pre-existing Note 4 and just did vanilla android with very minimal touchwiz features I would be happy. Stock Android still lacks features which makes the Note 4 more versatile.
And why go with a G3 display? So far everyone says that the Note 4 display is the best on the market. Plus the G3 display is more power hungry. I'd rather have the smaller removable battery of the Note 4 vs the larger non-removable battery of the Turbo. I haven't plugged my phone in to charge for over 3 weeks; I swap my battery out every morning.