I'm way too minimalist for these base designs, I have a "better" solution.
I currently have a pillbox design (see my other thread about Insane horde nights)...but the problem is the 360 degrees which is super inefficient and high maintenance.
I'm going to stretch one wall into many walls, so it'll be a wall, 3 blocks of empty space, and then a repeat of the defensive wall design....repeating itself in a kind of hallway.
The other 3 sides will be very thick with strongest blocks, to minimize any desire of zombies to go through that way.
This way if one wall fails, I can hop the other wall and fight from there with refreshed defenses.
Since my pillbox design hasn't failed yet (minus demos), the only real reason for repeating walls is to bail out when a demolisher destroys one section.