That's what I'm always hoping for with these big events, that it changes things in an interesting and lasting way. I don't like the line being disrupted just to fight a big bad, defeat it, and everything goes back to normal. Make the disruption count.
The solicitation for issue 6 gives me such hope, although I know it's just a solicitation:
"The apocalyptic finale of the event of the year. It's not that nothing will be the same again - it's that unless heroes can find a new way to be heroes, everything will be nothing forever."