[noggin]

One exception.  Apple TV does not support integer 24.000fps.    A lot of Netflix's original content is 24.000.

Yep - it's the one remaining flaw, and I put up with it (though I do notice it).

What about TrueHD Atmos?

That's not an issue for Netflix and Prime Video - they only do DD+ with Atmos - which the ATV 4K handles fine.  

I wasn't recommending the ATV 4K for Kodi duties - purely for streaming (where Dolby True HD and DTS HD MA/HRA are not used - just a mix of AAC, DD and DD+ - the latter sometimes with Atmos extensions)