I did create a build for ATV based on LE 7.0.2 and my github branch has 99% of the changes, but in my opinion the end result wasn't great and it's not something I am prepared to publicly support (too many other things to sweat time on) so I made a decision to not release it. AFAIK Sam is still releasing OSMC for AppleTV so maybe look at that option.
is there a platform that you suggest?