Very well-translated article. Thanks very much for the quality translation.
Eunjungie's answer about what's been changed and unchanged really echoed with me:
What's changed is that they have started participating more and more with their work, be it music, dress codes, color coordination, make-up points, hair styles, etc... They're offering their unique style more and more.
What's unchanged is that they're still as dorky as ever. These girls cannot act serious for a single minute. They will just dork out the moment they catch a breeze. It is like a never-ending sitcom.
To attract fans is real easy, have a catchy song and some well-coordinated choreography. These are the two major factors on how they KEEP their fans. Keeping fans is much harder work than attracting fans. They're always giving us new and fresh concepts on their music, at the same time putting smiles on our faces by dorking out with each other.
Keep working hard girls, and keep the dorkiness at the same time. My allegiance shall not sway.