Expansion/pack specific burglars?
I think it could be interesting to see unique burglar types added to some expansion or game packs, providing different challenges and being after more specific things in your sims house.
Like if you have magical realm, a mage burglar could show up who has a few spells they use during their burglary but isn't a great mage. They are after potions, magic related items and such so might show up if you have such things around the house and not inside sims inventories. These burglars would not steal anything else. Instead of a striped shirt, they could wear a tattered mage robe. Spellcaster sims can duel them.
If you have get famous and put the vault in your home, that could attract a master thief with all kinds of gadgets and tricks to help them get past your security. They only have eyes for the vault and can open it with their equipment, to steal everything within it. This would really let you go nuts with security measures which I feel something like that big vault really invites. It would now get an actual use. The master thief will always find a way to open it, but you could upgrade the vault so it does take them longer to open, or they might blow up the door to get inside which would trigger a police response due to, well, the loud explosion! They would disable the security system with a gadget before entering the home. They also have sausages to feed to dogs on the lot that makes them sleepy. They could not be good fighters, but could also have something to disable awake sims for a while. Like a freeze ray or something. They are agile thieves who rely on not being caught and not needing a fight. They could act pretty fast too, they move with purpose.
Get famous could maybe also cause an obsessed fan kind of burglar to appear if your sim is famous enough. They can't steal big things, just small things and always steal only one random small thing before running away laughing maniacally. It could even just be a dirty plate. They would be the easiest burglar to take countermeasures against since it's no professional burglar.
Get to work could enable the possibility of an alien burglar, if you have a rocket ship your sims have used to go to space with at least once. They could be scanning stuff in the house and take some random thing. Putting down a different kind of alarm or such could however prevent them from ever showing up, it would send out a continuous sound that aliens can't stand. Would also count for any aliens living or visiting the lot, but if there's aliens living on the lot that could also prevent alien burglars from showing up.
