I personally would prefer system like this: You walk world map from west to east and you enter a forced encounter, means, that you spawn on west side close to exit grid, then you have a choice, either go out to west and that will make you move back 1 square to west, or leave by east, taking risk of someone inside the map, and find yourself 1 square to east passing instead. I dont like this whole spawn in middle things personally, its like teleport or parachuting, but i do know many people like this.