Payday 2 update idea (Sidetrack please read)
Stealth in older heists is boring because when you kill all the civilians and guards there is nothing for you to do. The only older heist that solves the problem is go bank, because you need to answer the phone and watch the street. There should be a new modifier added (like one down) that encourages you not to kill the civilians. If you kill the civilians you lose a percent of the xp and if you dont kill them you get an xp bonus. I think that its best for this idea to be a modifier because it would be annoyng for it to be a default feature.