I think that out of popularity and then change to the ZEN the XEM
ZEN sounds nice:) Quite oriental sounding, but also hints the design 
yep, I think the name is very important…
At my first sight of the name, I can almost say it out loud as “Nippon e-Money” without further research. And with that name, it’s very hard to make it really international, frankly speaking.
I still love it very much though, my most favorite coin so far.