There are a series of Reed models within Altis. These models look impassible, and in reality, they would be very difficult to pass through on foot. However, in game, you can easily sprint through them with no sound.

Ideally, they should restrict movement and make a very loud noise when someone enters their geometry. If that is not feasible, blocking anyone from entering them would be a welcome addition.

In gameplay, it's very easy for a human to disappear, and almost impossible to see him. If these objects restricted movement, they would be an enjoyable addition to gameplay.