All Mr. Yahtzee seems to have mentioned is ways to neutralize or avoid guards in order to access specific areas.
My input: You don't verbally outwit guards just to get past them. You could also trick them into giving you keys or security codes you need. Or, here's a fun thing to roll in your head: false evidence. You could plant irrefutable proof on the scene that Guard A stole the sensitive documents that you have stashed under the floorboard in your office. Then watch as guard A is arrested for your crimes, lowering your heat in the process. Or maybe you could frame guard B instead, because Guard B is smart, and therefore difficult to make see things from your point of view. Not all stealth missions have to be 'get in and get out' style raids. You could plant yourself there for a long time, socializing and gaining their trust. Building up a stash of keys, passwords, floor maps and codes. Then pick your date on the calendar to loot the place and scram. There are tons of things you could do to prepare for a mission like that if you're patient. or you could just get in, and get out if you're not patient. This could be a way for the player to control their level of difficulty. If they're really good, they can just walk in and ghost the place in less than an hour before anybody knows whats going on. Or, if, like most people, they're idiots and they suck, they can take their time, read lots of flavor text, and build up a huge amount of intel and connections that inevitably fall into their lap. Finishing up whenever their stagnant brains decide it's time. I see a grand opportunity for role playing facilitation here.
