Great, until I use my Playstation Vita to play a game on my commute home. Then open my computer at home to watch a video. Or maybe plug my headphones into the PS4 pad. I’ve got 5 different systems I regularly plug my headphones into.

I think you are overestimating how functional real world bluetooth is...

I plug my phone into my car. It as 3.5" jack and no bluetooth. I don't have to buy yet another device to plug into the jack to provide a bluetooth interface.

I installed a $10 a2dp to 3.5mm device, powered by usb into my car, works quite well. Better than bluetooth built into cars which seem to start playing music instead of the podcast I've been listening to.

I got my Bluetooth headset to pair and work with my laptop (2015 Dell) and Windows 8.1 for all of an evening before the audio stream quit. After around 4hr of troubleshooting and a few subsequent sessions in the office, gave up. That was about 6 months ago. I've reverted to a USB wired headset.

I have a bluetooth speaker and bluetooth earbuds. Both worked fine under Android 4.4, now both stutter under Android 6.

It's too bad, especially since the SRS-X3 was not a cheap purchase. And NFC speaker pairing is all sorts of cool. But music that stutters constantly? The crappiest $2.50 earbuds you can find make for better listening than that.

Both my Nexus 4 and 5 stuttered constantly when paired with a Hyundai i30's head deck. I'm of the opinion that the Android bluetooth stack is not the greatest thing ever...

Less problems with CyanogenMod 12 and 13's stack, though.

It'd be great if device and OS developers made that a thing you could do!