This issue isn´t only with grass the enemy seems to ignore any kind of vegetation like bush, leafs of trees etc.

I also prefer the timesetting from arma II I dont mind the new content but it just dont feel right. I would love to have the old content in the game. Even if that would mean to buy an DLC

The weapons are on a sling thats true, but usuly even if you use that sling you don´t walk like you have an broom stufed in your ass.
I would love if they would trogle with the combat pace function an high ready a low ready stance. It looks strange to see standng guys in the base who are aming in their buddys face.