The 'supernova sparkle' effect seems to be a trademark of theirs whatever one thinks of it... kind of like Tokyo Movie Shinsha's trademark in Animaniacs was their camera angles and lens flare techniques (they were a contracting animation company for Warner Brothers along with a couple of others but they had the supreme animation skills by most counts).
((anyone interested in all things Animaniacs can go to Keeper's website:
http://www2.cruzio.com/~keeper/toons.html as an ultimate jumppoint))
--sez the Really Cranky Dragon (for those who remember...)
I figure we'll see a new character or two around ep 12/13. If none have shown up by ep 14 --- then I speculate they're keeping the anime's focus on the Current Fab Four and the others will just be one ep cameos later. There's enough manga material to handle both possibilities, especially with the L*C's flexible size (meh...).