Glacial door when locked as you know makes a wall fortified to 750pts. I want to suggest a minor change. Instead of making it a fixed number, make it add 450pts to any wall it is next to, so in other words: Regular fortified wall: 300pts + Glacial: 750 Augrum wall: 750pts + Glacial: 1200 I feel as though it would make the Augrum wall more valuable... as it is now, I find it has almost no uses. Replacement earth is much quicker, cheaper, and gets fortified to 300pts anyway, so... I just don't think Augrum is worth the cost or time as it is now.