So, because you have had problems with wires you would take wires away from everyone? Well, I'm sure you must be so glad you can do without wires now. You don't have to wait for the iPhone 7, you know.
Having a 3.5 jack is not going to interfere with the noise cancellation features of that lightning headphone. You can use that wonderful headphone with you current iPhone...you know, the one with the 3.5 jack.
Are you afraid that engineer will focus on the 3.5 jack, which will distract them from incorporating Bluetooth technologies into future headphone projects?
Ah yes, the future. Imagine the future we could have had now if they had only retired the 3.5 jack years ago. We would probably be driving flying cars now if not for that old technology which has impeded progress for far too long.