I honestly think they should spend that R&D money on trying to eliminate the front camera cutout (notch, dynamic island). I appreciate that Apple is trying to improve the camera, but man those lens are very big. I hope they find ways to minimize the back camera cutout while still retaining the same quality. Of course, give people the option to still have the dynamic island (remember, it's just software). Getting rid of the physical buttons should be the last thing on the list.