Greg Weisman, in the answer to a question, listed the various pitches made to try to continue the YJ universe: [link]
 Brandon and I (both separately and together) pitched all sorts of further Earth-16 properties, including (but not limited to) a third season (of course), animated spin-offs featuring Arsenal and/or the Arrow Family, a comic book entitled Earth-16, the Black Manta Celebrity Hot Tub shorts, a direct to DVD movie, etc. Brandon even pitched a YJ meets Scooby movie. Unfortunately, none of these were in the cards. 
I think any of those, (excepting the "Black Manta Celebrity Hot Tub") would have been great to see. Alas.
	
 
		
		
Heh, and I was all "Black Manta Celebrity Hot Tub", woo!!! It could be a talk show format like Space Ghost Coast to Coast.
	
 
		
		
Buzzfeed interviews Grant Morrison about that character he just killed off.
	
 
		
		
Batman has a big confrontation with [spoiler redacted] at the end that will change pretty much everything
How much is pretty much? Like, more than 10%? Writers and hypberbole...tsk, tsk.
At least he didn't say "gamechanger".
	
 
		
		
Bruce Timm is no longer at Warner Animation: [link]
	
 
		
		
What, did they want to kill off the animated Green Lantern?
	
 
		
		
It was canceled at the same time Young Justice was.
	
 
		
		
Oh, I didn't realize! I only watched the pilot, but I heard it was pretty good?
	
 
		
		
 Bruce Timm is no longer at Warner Animation: [link]
Sad news. Hell of a run, though.