Mike: Glad you got my humor... What do you use now to get Amazon Video? Just airplay?
We are having problems with airplay on the ATV4 due to 2000ms audio delay, since Apple dropped S/PDIF. Setup: ATV4 to HDMI Receiver. Receiver(s) are different Pioneers. Siri remote won't play nice with any of the receiver(s) volume (no +/- on direct connect nor "learn" the function). Lots of posts regarding Pioneer receiver problems. So, for now, we airplay audio from the ATV4 to old ATV3 to receiver, to use volume on Siri. This is Progress? Sylver added airplay delay support on NAStify, but not a lot of developers have.
We have HDMI FireStick/Roku (low cost) and various game consoles.
Wish the FireStick was more powerful so it would play side-loaded HDHR View properly. Then you could "live watch" your DRM channels, like FOX, or ours like Starz(s).
We also have the Nexus Player. Great for DRM channels, but I haven't gotten side-loaded Amazon to work. In progress, though. So for now, even with the ATV4s, we have 1-2 other inputs.
Can't wait to get EVERYTHING on the ATV4. This was my "hope" 4-5 years ago, still not there yet.