Dear Ben,
you know, the timetable is running stable for a long time and I think we cannot expect an expansion. Instead, you can follow the EuroBusiness timetable for example, where every two weeks there will be changing flights for smaller airports too, similar to those you mentioned.
About the A319, I can say to you, that some monthes ago it was in the fleet, but the visual model and the dynamics was not too good that time, so it was replaced by the currently very famous Embraer 170.