Currently it's possible to make very hard turns while running and the player's character moves like in an ordinary FPP game. While it has some merits, like more accessible CQB, it also promotes run'n'shoot gameplay. Running on a steeply inclined terrain, instantaneous maneuvers on gravel or wet grass are no problem, which is obviously wrong according to real experience.
It should be possible to experience certain difficulties, when moving in a difficult terrain in a careless manner. The most obvious example is entering a too steep terrain and sliding or even rolling down with increased speed, which is a real danger when hiking in the mountains. There is a reason, why you won't just run down the hill in real life, which is possible in Armaworld. Also it would make sense to secure key mountain roads and passes and would promote more strategic thinking and acting.