I implemented choosing locations which will affect available odds and board themes (and possibly language at some point). Unfortunately, I don't have any theme graphics yet!
I've changed a number of design elements per Kosal's sage wisdom. Winning and losing bets are now very visible. Bets placed on table are now more visible. He also 'shopped up some new dice graphics for me! Thanks Ko!
Something about the CSS Facebook adds for Safari screws with the new layout (v3) that I have, so I added a user agent check which will render the old layout when Safari is detected via the Facebook interface.