I don't use iOS on a phone but Android also has bigger photos when someone calls and I love it, a photo is much easier to recognise then some text, so I can quickly tell who it is; oh its the misses yay. LOL and it looks really nice.
One thing I would love to come from Android to iOS is how google ties the numbers to its maps so if a company calls you it pulls the image from Google maps/Google plus. This is amazing for recruitment agencies that always call me, now I never have to pick up their calls thinking its someone important, its also pretty cool how I can type pizza hut on the dialler and it shows me all the closes pizza huts for example.