I must say that I disagree with you about Apple Maps and Apple Calendar. I’m no technical slouch but find the Google equivalents to be just down right a PITA to use (I do like Gmaps multiple location feature though).

Also, I have the same wallpaper as yours but can you tell me if it’s a leftover from a previous iOS version or was it included with iOS 11? Also, if I change it will I be able to get it back?