I had originally come up yesterday with simply "New Electronic Money" but decided to use a thesaurus and found these Synonyms for the word "New"
"Novel" stood out for various reasons, the Synonyms that stood out are:
Different, Innovative, Unique, "at cutting edge", "Breaking New Ground" and Fresh.
I think all these qualities are what NEM stands for, so if DASH is simply digital cash, then Novel Electronic Money means alot, lot more