mrsb33 thank you for sharing ideas. Just for the sake of idea exchange, what would you say if instead of moving photos in and out event, there would be functionality to assign correct date and location to a photo? Then, as result, it obviously would be reassigned to the correct event automatically.
I think this is close to what you are suggesting, but there is major difference. Event is virtual thing that only exist in Tonfotos database, while when you are updating metadata of photos, this seems to be more sustainable approach.