@youronlyone I've had to explain to a lot of people why SNSD has 2 names. I honestly think it would have been better to just use SNSD.
WSJN tried to do the same thing with Cosmic Girls and GWSN with Girls in the Park. Both did nothing but confuse fans. I don't ever hear either English name used.
Honestly, as long as the Korean name is either not too hard to spell or can be abbreviated, it's just easier for a group to have 1 name. There's not really a need for groups to have lots of names.