Yes but that isn't the show nor should it become the show, imo. I'm glad the focus is where it has been(and I'm glad there is no one else in the Impala). The show IS different precisely because of that focus. This kind of character additions turns it into any number of other shows. Not having females around often actually makes the show more interesting and unpredictable in what it might do in various situations--because normally females would be left to 'deal with that' or there would be that common male/female dynamic. But this makes them take a different tact. It's like Horatio Hornblower, which was set on shipboard--the men really only had each other and so that is where the emotions were mainly invested--in their friendships, in how they try to help each other, support each other, take care of each other, etc. That in turn allowed a kind of different POV from what is usually presented. There is nothing wrong with that. There have been plenty of shows that focus mainly on the interaction between women, either as friends or enemies or relatives.