User blog comment:GoldStarz/Should we have another time skip for Season 3?/@comment-3094698-20120510215626/@comment-4928331-20120511024457

(1) He spent so much time on the origin stories because Earth-16 is a blank slate, and he probably wants to establish a foundation from the get-go.

(2) What happens in the real Earth 4 years from now, or DC's Earth-2 for that matter, does not impact Earth-16 at all. It is an independent continuity, so I see nothing wrong with Greg writing a fictional story set in a future he can't foresee.

The time skip has already created what tvtropes calls a "Broken Base" among Young Justice fans (you being an exemplar). I agree that there shouldn't be any more.