User blog comment:Don25/Jenn confirms the cast is 11 characters from the first gen, as well as Jude./@comment-1427230-20180402033400/@comment-1427230-20180402184645

Ok maybe it doesn’t exactly explain it, but the way I see CN decided of to ones to bring back, Gwen and Harold weren’t two of them. No Gwen and Harold means they have no need for Megan and Brian.