It's still stupid that most people simply dig right into the enemies base/intel since most of the map is located on top of hills, which make movement tedious and a pain in the butt.
Make the map flatter so fortifications become more useful, make it impossible to dig tunnel below a -3 block level (that includes hills), etc.
It's so incredibly epic to see an enemy forward entrenchment, gather a couple of people and assault it with grenades and take it. It's so incredibly retarded to see two people simply dig into your/the enemy base and steal the intel getting a cheap win. The game should be set up around building fortifications and shooting the enemy, not building an undetectable tunnel and spawnraping the opposing team, which is a huge problem.