1: My AI works the same! It picks one of my 20 pre-defined spawnpoints/navpoints around the map, attempts to move there, and if the player enters its notice radius, attempts to move to the player until the player exits the radius.
2: I wanted the game to be about rescuing / collecting research from a space lab that is being invaded by aliens, and ended up scraping it 4 hours in! The current game uses the same movement as the rescue spaceship did.
3: The fish aren't ment to splash when they spawn, only when they die and float to the surface... yet they do anyways for some reason, and I like it!