Make moon phases more realistic.

The position of the moon should not be fixed, but still change its phase and position in the day or night sky every day cycle. It should take eight game days for the moon to go through all its phases. The phase would change between moonset and the next moonrise.

1. New Moon

2. Waxing Crescent

3. First Quarter

4. Waxing Gibbous

5. Full Moon

6. Waning Gibbous

7. Third Quarter

8. Waning Crescent

Then New Moon all over again.

Very rarely, possibly at random, a New Moon should transform into a solar eclipse when mobs can spawn in daylight with or without rain...possibly with rare variants too, such as all Creepers spawning as Charged Creepers and all Zombies as jockeys, skeleton horse traps spawning like a normal mob, etc.

Every seventh full moon should also become a lunar eclipse, where nothing special happens, but it still looks beautiful (or maybe scary).

Most full moons, as they rise, should also appear extra large near the horizon and discolored yellow or orange, then shrink and wash out in color as they get higher in the sky.