Let’s add a bit to number 12...
“Our moon causes tides that are just strong enough to permit tidal zones (a great breeding ground for diverse life) but not so severe as to destroy life.”
Yes, but how much MORE unlikely is it that our moon is also precisely the right size and in an orbit that routinely places it at the precise distance between the surface of the Earth and the Sun such that we can just see bits of it in the cracks between moon mountains during full eclipses.
“The first or final piece of solar photosphere shining through the deepest valley on the Moon’s edge creates, with the ring band of the inner corona, the most spectacular of all eclipse phenomena: the diamond ring.”
Get back to me when
A. It can be shown, universally speaking, that that isn’t spectacularly rare.
or
B. We can engineer such conditions on a similar scale. (Go Space Force!)
Perhaps we should be looking for life on planets in habitable zones with perfect diamond ring eclipse generating moons.
Could be a signpost.