Get rid of the Chemical Dispenser behind the bar

[Roomba]

Yeah, the few times I've played barman, you can reduce the break-in rate a ton simply by asking people if they want to use the dispenser and letting them in to use it. Plus, a fair amount of drinks require the chem dispenser for interesting chemicals, so it's not like the barman doesn't need it. And as for the third point, I'm not sure it even really makes sense for how 'easy' each job ought to be as a traitor.