I get where you are coming from. Its a shame that Apple only ever meets the needs of 90% of its customers.Yes, I am familiar with the 6s size. One of my girls has a 6 and the other has a 7.
There are other things I dislike about the 6 design that I just didn't get into earlier. For example, I really dislike the the rounded edges of the 6 design. I also didn't like the camera bump.
Plus, when I got rid of the 6s Plus, it was much cheaper to get an iPhone SE than a 6s, 7, or 8.
That remaining 10% is still a big number and would be great for Apple to cater for them - i miss the headphone jack still even though I do have a pair of bluetooth headphones.