For me it is hard to find places that accepts bitcoin and to be frank i have not seen any place that accepts bitcoin till now and when ever i need money i used to convert to local currency to purchase things and i hope all the countries will start legalizing bitcoin just like Japan and if so that would be convenient for me to use my coins when and where possible.
Of course if Bitcoin is legalized, the Tanks game structure for its application will be more or less qualitative, and not underground like today. But just do not know how realistic with the implemented crypto currency mass use by ordinary people.