The Frontlines Premade issue has not been fixed.

[Shinklet]

I'm not going to remember exactly what Live Letter it was from something over 6 months ago, this article is also way more recent. This interview just says it was successful, and it was. But Yoshida did say the intent of BA was to 'party inside and take on the challenging Dungeon.' Japan went about it the way they had initially intended. While the West were more organized outside the game. He said it was 'something they didn't forsee.' But didn't outright say it was bad, just that it wasn't the intended way the content was meant to be taken on.

But you said "se clearly said they didn't want that to happen".