If bandits could yoink your vehicles if you leave them unlocked, that would be a comical prank to follow up on the place-vehicles-unlocked change. Realism!
If bandits could pillage your drone storage if you forgot you told it to wait somewhere a la new-DOOM upgrade drones, that'd be unpleasantly entertaining. Same for vehicle storage, too, if it's unlocked as above.
If bandits could raid your campfire (or base storages) and steal your food like a significant other with an unattended plate, that'd be fine, too. Make locking things a factor?
If bandits could go in the in-game chat and apply insults about my gameplay and/or mother in the middle of a fight, that'd be amusing - probably moreso than if they just had mocking voicelines, because it's easy to miss audio as things are happening. (Possible AI intertwining for unique chat insults?)
If I spot a bandit with a rocket launcher within eyesight of my pure, innocent puppy of a base, I rather think I should feel a twinge of panic about whether he's loaded with frag or HE rockets, because there's a bit more at stake in 7DtD than if I saw a schmoe with a Fat Man in Fallout.
Certainly, these are things that could easily happen in a PvP environment - but just because I might enjoy something that vaguely emulates people, that doesn't mean I want to actually deal with people. A NPC bandit is vastly less likely to hold a petty grudge than YOLORizzomancerbarelyevenknowher443, and giving character to things is rarely ever a downside.
inb4 'AI vaguely emulates people'