Frustration, disappointment and a shake of the head
I'm a bit disappointed that you cannot agree that an in-hand photography-controller is crucial to image flow. What I want is a reduced-weight device (eliminating batteries) that can handle movement of the camera from place to place, without having to worry about objects or ambient illumination blocking the signal. A fighting man's camera, that control's the adjustments, from the LCD. For the most part, this is just a change in medium, as computer's have successfully done, over the years, giving birth to Wi-Fi and such. I had a few InfraRed printing devices... and understood their shortcomings, as misdirected calculator emitter or other transmitter had the signal blocked. It made it impractical to move, although it did alleviate wire entanglements. Again, RF was not there, yet. Today... we are needlessly missing out on this enormous advantage to our suites.
Again, practically speaking, with the device built-in to the camera, software revisions and changes would always be able to address it. You would not have sudden disappearances of functionality, just because an upgraded version software/firmware came out and denied functionality to attached third party units. Or, in SONY's case, the "unexpected" hot shoe change that, now, leaves everyone wondering what's next.
Well, this should be next in camera history. You really need to get over being stuck in the mud with IR-technology. It is a loser.. and I am relatively certain many people have lost images because of it. I know I sure have. Enough is enough!