honestly don't see ALL of them as main girls, at least not directly yet. Plot-wise there's strong arguments for Lila, Asuna and Jaz, but as it stands, not much for Julie and Ash, which, in Julie's case I understand, dev's still setting the stage for her to shine away from sis' influence (showing off her role as the group nerd, while also giving her a "growing up" story of sorts with what little we've seen from this update), but Ash hasn't had much development, and in a long while too. I had to run back into the prologue to refresh my memory on what her deal was, it's been that long man...