I hate that in sector wave missions the direction of attack is randomized. It's just annoying and as nothing to the game, it's only a delay to build the turrets and gives zero strategy depth
If the enemies came from a single direction, you can just build a single cluster of turrets and a little bit of wall, and you're set. This would be very boring, especially now that the enemy path finding doesn't avoid walls, instead ramming through them, no matter how many rows of wall there are.
