User blog comment:Rassilon of Old/Young Justice spoilers at Comic-Con 2012/@comment-74.234.75.243-20120725030849/@comment-70.75.82.239-20120731041924

Greg has always referred to the original cast members as "the main six" so if there is any significant character development it would be allocated to them (Blue Beetle and possible Impulse and Beast Boy being the exception). They might not develop the other new members, especially if the tentative season three time skip shakes up the roster as well.