I see a lot of comments about people percieving killboxes as "cheesy" or "too strong" or "boring".
What is the issue with that? Have you seen fortification in real life? Heard of entire medieval armies just sadly sitting around and waiting until defenders run out of food, because any direct assault will leave them with debilitating losses, even if they have dozens times more man?
I dont event want to talk about such things as modern warfare defences, such as minefields, machinegun crossfire, and miles of barbedwire. Poor tribals.
Currently concrete fortification fell out of use only due to exessive amount of explosives industry can produce, and they inability to cover large enough area, warfare became too mobile.
But on a Rim? Without mass produced armored vehicles and artillery? For the sake of protecting single outpost itself, and not a nation border? Hell yeah, these killboxes are exactly what would any semi-competent governer construct.