What would make a government to rebrand their traditional currencies just to edit some graphic designs with excessive amounts of money bills involved to execute such project that doe not mean to brings more values to the currency neither does it boost the economy level of the nation?
If not for corrupt practices, a government sometimes redesigns and restructures their currency if there is a perceived manipulation in the system but it is very bad that most government just bring up means to embezzle government funds all in the name of rebranding or redesigning the country's currency. A country's currency doesn't even need redesigning except in a serious case of compromise or suspicious attempts to manipulate the currency.