Man, I really hope heroes don't kill heroes. I think we have had enough of that storyline. I hope the storyline will be much deep er than that tired idea. Its always better when they overcome the circumstances, unite, and save the day. It is possible to tell a good story without the deaths. Perhaps naive,...I hope not.
I want to believe this will end well, and all of these worlds find a new home, and that bringing back all these other worlds was for some storytelling good, not killing porn. I think it's time for a good story with something strongly resembling like a happy ending. I am hoping DC just uses this event to open the Who's Who library of the entire DCU and everything can be available again and that hefty $$ investment we have all made is still relevant to a possible future storyline.
Even keeping the old Crime Syndicate around would be cool. They made their choice to defend their world in COIE and it would be interesting if a new twist on villains, getting a second chance, actually changing their ways to be their world's champions.