Hey guys, there's a list of tips and tricks here worth perusing, some we know and some perhaps not. http://forum.xda-developers.com/galaxy-s6/general/galaxy-s6-tips-tricks-t3072036
Number 23 is how to completely debloat without rooting.
My favourite though is disabling double click for the camera on the home button to get rid of the small delay. It really does make the home button instant.
For me the double tap to launch camera (even when the screen is off), is one of the best things about this phone!
I suppose it just depends how much you use the camera.