Privacy is a human right,Like the whisper in the night, that is a tool against authoritarianism.
Good privacy => Good fungibility => Sound money
Good privacy and fungability are required properties for sound money. There will always be a need for sound money. When an orange baboon start putting taxes (tariffs) on everything leading to high inflation, more people might start to realize the importance of sound money and of privacy preserving coins.
I use the phrasing privacy preserving on purpose since I see privacy as “a property” of grin and not as the most important property of grin. Calling grin a “privacy coin” might make people overlook all its other wonderful properties.
Grin is: minimal, fair, scalable, elegant and privacy preserving 
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Taking all these properties together, I like to call grin nimble, which is neat. Not only because grin is as nimble as Harry Potters nimbus 2000, but also because as single term it encapsulate so many of the qualities of grin. I would find Nimble Wimble a good alternative name for Grin as project, as it is the most “nimble” of all the Mimble Wimble implementations out there 
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