if talk/text is all you do then yeah as awesome as it would be to upgrade, its not worth the $200-$400 extra just to unlock your phone faster (touch ID)
Well, there are, but just ones that might be useful to many. For example, LTE has been improved as far as what bands are supported by various phone models.
These days of texting and Internet Comm (people still use phones to talk? 😀) I wonder if anybody is still doing voice quality testing of the various handsets.
In the ole days, the grapevine said MOTOROLA KNOWS RADIO. I still wonder about that.