There should be a /sethome command for the wild so some people don't have to walk four kilometers to your base through a monster infested underground tunnel with lava and blown up parts in ravines, and a /spawn command in the wild for the same reason. Also /tpa would be a good idea for the same reason. Zombie pigs are too mob-like in the Nether. I accidentally poked one, and 5 minutes later, I went to the Portal. I was them mobbed by 10 other pig-men.