Vehicles don't have any appreciable splash damage anymore, it takes two shots minimum to kill an enemy with splash since the changes to HE rounds. And since infantry are revivable, the stacking is still horrible. One enemy unit left alive means the entire group survives. On the collision note, anyone else notice dead bodies being collidable objects lately? The problem I'm seeing is that a lot of the infantry AV is basically a tank without the armor. That means it's just as good, if not better, in terrain that's friendly to tanks. Think of the area between Indar Excavation and Quartz Ridge, or, as I've been known to call it, the place where armor goes to die. Once the Phalanx Turrets on each side are gone, you'd expect armor to dominate that fight, but infantry with lock-ons, Lancers, and AV turrets still kill most of the armor that rolls out. That kind of open-field fight is where infantry shouldn't be advancing without armor cover. A tank column in that fight should be the deciding factor, but that means it has to live long enough to make a difference.