But What if the host planet of Earth-size exomoon be far enough from the Cool star? With the tidal heating, could be This hypothetical Earth-size exomoon could have enough heat to be habitable instead of be too hot for life,the Planet-moon system just need, I think be a Little far from the Cool star classical habitable zone,and in this intermediary distance for determinate number of transit,TDV and TTV could be detect by Kepler in Projects Like The Hunt for Exomoons with Kepler (HEK).