Not all Mother Bases are created equal. Yours could be wildly different than another player's, as you've both decided to focus on different aspects to upgrade. It's a nice little touch that will make your base feel like home.
It's also the reason that you'll feel compelled to loot, loot, loot other people's Mother Bases. I mean, that cargo crate would really pull your base together, so go ahead and swiftly swipe it after disposing of some pesky guards.
This video shows off exactly what your grandiose cargo caper could look like. It starts at about 17 minutes in, but it's all rife with action that's so wonderfully Metal Gear Solid.