I would love to see ultimate enemies that would force players to have to team up to defeat them. Zombies unfortunately don't cut it, at least right now. I've never felt like I'm in a situation I cannot get myself out of when zombies are involved. I'm not saying get rid of zombies, but they pose no threat. What if there were creatures lurking in the deep woods of Chernarus. What if they were fast, sprinting 10ft tall beasts that would hunt you if you came within eyesight of them. Creatures that could not be easily killed by a lone soldier. They should be loud roaring animalistic beings. Imagine the terror of walking through the woods in near pitch blackness and hearing a distant roar. They should take a lot of bullets to go down (at least 1 full magazine of 7.62). This would force people to want to team up down south so they might survive when travelling north towards the military loot. The higher north you travel, the more of these creatures you would encounter. One idea would be to make it so the creatures would not stray too far from their wooded area. This would force players out into the open, and make them vulnerable to being spotted by other survivors. The dynamic shift that this would cause in the game is exactly what I think DayZ needs. I think people are somewhat fed up with PVP at this point. But with these creatures lurking in those empty, terrifying areas of Chernarus that are uninhabited at present, it would bring fear back to the game.