Remote-control door locks. Why is it necessary to blow the horn every time you lock/unlock the vehicle? So you can find your car at the mall? For every one time you need this feature there are going to be multiple times when you park at home, probably not far from your neighbors, perhaps right under someone’s bedroom window in a multi-unit dwelling. The effect is similar to that of the carpooling jerk you remember from college, who showed up in front of your building early every weekday and honked the horn while you were still trying to sleep — except that the remote-control honking happens at all hours of the day and night. Remote door locks should be configured so that the horn is off by default. Better yet, leave the horn off by default and add a quieter mini-horn that is used only for locating the car in parking lots. You don’t need a full-blast traffic horn in the relative quiet of a parking lot.
Always-on headlights. I don’t want the lights to be on all the time when the car is running, even at night. Make that especially at night. There are times when you want to sit in the car and you need to keep the engine running (because it’s hot/cold out). Why should you have to announce your presence to everyone in the area? The light also kills your night vision, which makes stargazing and otherwise keeping an eye on your environment difficult.
Interior lights that don’t shut off immediately when you close the door. Because it goes without saying that lone women getting into their cars in the middle of dark parking lots should be illuminated.
If these features are available, they should be easily configurable via a simple electronic control panel on vehicle dashboards, and the defaults should favor quiet and discretion. Different drivers will have different preferences. For a population as big and diverse as automobile buyers, it’s ridiculous that some manufacturers impose one-size-fits-all settings for features that can easily be made configurable.