Glass design would be good but then my iPhone is going to be covered by a case to prevent the glass from being scratched or shattering so its irrelevant to me. Apart from glass it looks exactly the same as the current 7 from all angles
Wireless charging isn't really wireless. Just like the Android competiton its got a pad connected to the plug, and I have no issues with traditional wired charging. The convenience is nice but again not worth $969.
The iPhone 7 Plus I have is still monstrously fast and all apps load quickly so a CPU bump isn't useful to me. There was microscopic difference in image quality between a 6s and a 7 camera so whatever improvements in this area would be miniscule.
The iPhone 8 has a completely different display technology, an overhauled design, 3d sensors, FaceID, no bezels, AR support, a new function bar, an always on display. Now THIS is an upgrade.
If Apple updated the 7S LCD with ProMotion and TrueTone, I would have gotten it but Apple won't implement them as that would make the 7s superior to the 8 in some aspects. The 7 already has DCI P3 so they would import the same display into the 7s to save costs as the 8 costs too much to make to begin with.