I wouldn't spend money on an AppleTV box now. We're only 5-months from the 10-year anniversary of the original iTV announcement and there are far too many good (and cheap) alternatives around.
I wouldn't spend money on it either, even though it gets at least 10 hours of use per week in my house. I tried OSMC on it and it didn't work for me as I expected, however the OE build you pointed me to runs great and has been a really nice bump for this device. Any plans on doing a LE build for the ATV after all?