A good point about the mini maps is that they point in the direction the player is facing. This is in contrast to the main map which is always pointing upright to north. The maps are useful to a degree, importantly they allow the player the able to navigate the game. This helps you to manage the fact that your character is infected with malaria and this means that you need to do missions every now and then in order to get more medicine to continue with your treatment, If you took away the maps this would become an impossible task to get to the next position in time and you would die. Removing the map would mean that you would have to remove that game play aspect making the game harder as the environment is too large resulting in a frustrating game. I would say a minor improvement would be to have a permanent mini map on HUD, your not going for realism if you didn't have it for that reason. Since if you were you wouldn't say how many bullets you have and how much health you have.