The problem is there's sometimes too many of those little bumps. Like on El Haluf... driving a scout around on that map is the most painful experience. Tons of little bumps on a downward hill means that you have to slow down to 30-40 km to avoid flying into the sky and breaking your tracks. And there's still plenty of "invisible" walls. They're just now in the form of impassible gravel/rock formations that offer 0 traction so your tank slides off. And there's a lot of walls that after you run over them, they leave a bump which makes your tank tilt up like 5-10 degrees. I can't imagine a 50 ton tank getting propped up by 3-4 pieces of bricks. Also don't get me started on tree stumps. Got stuck on one one game and had to have a teammate come push me off.