Abandoned spaceships

I think that it would be cool if there were abandoned spaceships. To make it better, you could add aliens that come out of them. The spaceships would be very rare to find. The aliens would only come out at night and wouldn’t go too far from the spaceship. The only way they would come out at day is if you get too close to the spaceship. The reason to go into the spaceship is because they have really good loot in them. But you have to fight off the aliens first. There would be around 2-4 aliens per ship. Although there would be no way to fix the ship, you could get good loot and the blocks that remain of the abandoned ship. If you defeat the aliens, they would drop moonstone (another thing that would be an amazing thing to add to Minecraft). The ship by itself would be made out of obsidian and black terracotta. The loot would be stuff like diamonds, gold, moonstones, and armour. If you don’t want to add it, that’s okay, I just thought it would make an extraordinary addition to Minecraft.