Absolutely none of those make it Pro. Sorry.If it has a 120hz Promotion display like the new iPad Pros then I'm on Board.
However. I think very possibly Apple will be getting rid of Numbered Names altogether. Because they are behind Samsung now. Galaxy 8s Plus vs the IPhone 7s Plus
IMO total speculation the 7s line will be renamed IPhone Edition for both sizes confusing but you own a MacBook Pro regardless of size you don't own a MacBook Pro Plus.
And the OLED 5.8" rumored iPhone 8 will IMO be called the IPhone Pro
Pro features
#1. OLED Display 125%sRGB Color Gamut coverage
#2. HDR
#3. Pro Phtography with a mega new camera new Specs.
#4. The A11 will be Feature HMP heterogeneous multi processing
#5. 4GB RAM
Just enough features to make it "Pro" then next years 6.3" OLED IPhone Pro will feature the 120hz Promotion display. And last years 5.8" Pro with new Specs but no 120hz display will just be called IPhone Edition.
There will never be 'iPhone Pro' in the entire history of iPhones for the next 50 years+. Enjoy.