I would love to see Dax gambling, either at Quark's (maybe rubbing his head for luck) or with her old Klingon buddies. Maybe with Kira looking on or threatening Quark?

As for Bashir/Garak, I would love to see one of their totally friendly breakfasts which don't involve trading information at all, because why would plain, simple Garak do that? Maybe with slightly more hand-holding or foot pressing than happened in the show.