@Portisch someone here also booted CoreELEC on a Mecool box:
Mecool boxes are really just rebadged Skyworth boxes. Is there anything at all that could be tried on my box?
What totally blows my mind is that contrary to every intuition, this is indeed possible as Functioner has already done it before!
Sadly, there are hardly any Android boxes like this where I live. The few that do exist are nonsensically priced ($70 for a 2GB 8GB S912 box!)