How about adding support for replaceable batteries, SD cards, etc. All other things Apple either doesn't want anymore, or never wanted.It would be a good business decision for Apple to add a 3.5 mm headphone jack with advanced support for high-impedance headphones (like on new MacBooks) to the new iPhone.
1) Apple would make their product line cleaner by allowing to use the same set of headphones with MacBooks and iPhones.
2) Headphone jack will allow to listen to Apple Music lossless (Bluetooth is not capable of transmitting lossless). Therefore, helping to win a market share for Apple Music.
3) It would be possible to listen to music while charging your iPhone.
What are your thoughts?