Well, issue with lack of light is also that those who could hit or fight against soldiers/guards cannot fight as they cannot see at all their targets either. But I am not against idea darkness kept around but eventually guards in gate go through, lock the gate and come with reinforcements which are similarly stated and darkness is gone by then.<br/><br/>While if there is no darkness, some could try aim spells, actions or move to gate prevent it closed and such. So darkness is presently double edged sword while few can act and behave normally thanks darkvision. So Simona sort speaks for crowd who wants to able join the fun beating guards (despite it may be tactically not smart thing to do).<br/><br/>Just my few cents.