The next incarnation of the DC Multiverse seems to be a mix of the New 52 (or the "DCnU") with the pre-Flashpoint multiverse but with some improvements:
- Legacy characters like Ryan Choi or Jaime Reyes work with their predecessors instead of replacing them out of the blue.
- The original Teen Titans generation of sidekicks is restored, with a place for Wally and Donna.
- The golden age superheroes are back and World War II is part of their history again.
- Romance is back. Aquaman and Mera, and Lois and Clark are couples again.
- Love, hope and optimism is allowed again.
Personally, I think it's an excellent change.
The time might seem odd, but if the grimdarkness of the New 52 was damaging the properties, it was smart to cut it before it does worse.
Some people believe DC to distinguish itself from Marvel, by being "the dark one", but it has only been that way in recent years. Traditionally, DC covers all sorts of genres an tones: comedy, romance, western, war, dark, etc. It became darker as it started imitating the tone of stories like Watchmen or Batman: The Dark Knight Returns, rarely with the same level of success outside its Vertigo imprint.
DC's superheroes were more optimistic than Marvel's during the silver and golden age. Usually more assertive and civic minded. Romance and couplehood isn't new to them either. Hawkman and Hawkgirl marry very soon in every incarnation, the Elongated Man was married by his third appearance, Aquaman married in 1964, followed by the Flash and the Atom.
The Rebirth Universe sounds great. So, let's see where it goes.