I only recently got the keypad lock on my current server, so my main base still has a key lock on it.
I don’t need a map to navigate the area around, but I tend to carry one with a decent chunk explored, and a marker in some inaccessible site a few km from my base with ‘home’ written on it. I also mark off a few other bases in the area so people think it’s an active map.
Basically, it reduces the chance that people who kill me and take my key could find my house and rinse it.
No matter how pro your architecture skills are, there is no better base defence than not being found…