I personally would like the option to be able to choose a different loading screen image per table. So when you select a table, you get a loading screen which is related to that specific table instead of a generic one. As far as I can tell, this is not possible at the moment. Maybe have a button for each table in the game manager to browse for a loading image to use.
Not sure how hard it would be to implement or how much desire there is for this feature from other users but just thought I'd throw the idea on here as it's something I've been looking to do.