My intuition is that James Robinson stood in the way of franchising Earth 2, now that he has departed expect to see 'THE JUSTICE SOCIETY of AMERICA' announced as joining Earth-2 on the shelves very soon.
His replacement? I've heard Paul Levitz put forth as a suggestion, logical choice and maybe 50/50, but with a relative drought in the talent pool at DC at the moment I'm stuck for ideas who else to suggest... possibly it will be someone relatively unknown perhaps? That's what they did with the Green Lantern books once Geoff Johns gave notice.
Please don't let it be Scott Lobdell, good Superman writer, but I feel his Teen Titans is wholly uninspired and dull to follow.
Not Justin Jordan either, his Team 7 was diabolically bad. Excrutiating to read.
...Is Kieron Gillen still Marvel exclusive?
Personally ..... Earth 2 should end with #16. sStart as JSA title the month after. Add a couple of Earth 2 titles ...... hence start the Earth 2 line. Replacing the decimated Young Justice Line.