Maybe doors that automatically unlock with the loss of power would be good.
Our Ford van the doors automaticly lock when drive is engaged.
I hate the damn thing and the rear doors do have to be unlocked for the passengers to be able to exit. The child saftey lock for rear doors has to be disengaged every time the door is opened and closed. I constantly have to exit the vehicle to open the rear passenger doors to allow the passenger to exit. The front driver door will open with pull of handle.