Solution is fairly easy, well, conceptually...
As many have said, way too much confirmation. What I'd do is slice off much of the "are you sure, that you're sure, really really sure??? stuff as suggested. The agony of dispatching retainers is one place where more clicks can be eliminated that need to be used to dispatch. The solution is a single special window - "Undo previous transaction," valid for all but MB interactions, for a minute or so. MB is trickier if the seller pounces on his proceeds instantly, but likely could be done with a delay or two... or maybe just left as is. By and large, however, just letting us undo the unfortunate mindless click would take care of most exhausted driver flubs. It is there now in crafting, in a way, with "trial synthesis." However it is fixed, getting rid of many of the useless clicks in the game gets my click.
Shooter