First off, I'd recommend a hidden menu of deck options, that hovered by the deck, accessible when needed, like so:
When clicked, it would reveal the deck options, like so:

The option icons are as follows:
Shuffle: As it works now, of course
Gather: Brings together into the deck all of the cards from that deck that are on the table.
Flip: Flips over the entire deck of cards, for games that recycle decks in the order they are added to the pile, with out shuffling.
Straighten: Since gathered cards keep their orientations, this button puts them all top-up.
Another possible button might be Dock/Undock, to allow the moving of the deck itself.
Anyway, when the menu is open, clicking outside of it will close it again. I think this will add in many of the functions of a real set of cards, and still be clean.
Another thought I had was that, in real like, you can sweep up counters, stone, etc, and gather them togher easily, while with Zun Tzu, you have to do things one at a time. Is there any way to sweep up certain types of counters, perhaps with a similar menu button shown with the counter's sheet?
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