Well that's kind of the point, to see if people only grief or if some people band together and kill all griefers. I'm sure there'd be tons of hidden houses and chests all over the map, alliances would be formed and broken.
Basically I'd buy a new xbox and get XBL and also minecraft. Then leave the game going 24/7 on 1 hour autosaves and checking on the game throughout the day. I'd put it on friends of friends so everyone adds me and then I accept then people can just add those people if they want to join. There would be little to no moderation at all, I just want to see what would become of the map and the people and their creations. I'd come on temporarily maybe once of twice a day to make sure I didn't freeze or disconnect.
If you have a 1x2 tunnel with a minecart going through it and press left trigger while looking down you glitch through the floor, and on my map you end up falling into lava. Is this a known bug and is there a workaround to it? Will I need to make my tunnels wider? It only happens if you press left trigger to get out, if you mine the cart with right trigger then you are fine.
Go to the forest with an iron axe and plenty(at least 15) raw fish. Start getting wood and eventually you'll come across some cats. Only in the jungles though, just like dogs only spawn in woods, cats only spawn in jungles