I've been re-reading and reading for the first stuff from the Pre-Flashpoint universe and I think that not even with Rebirth I'm regaining the passion I used to feel for this universe.
I feel like the long history gave these characters a lot more depth and personality. Even though they're restoring legacy and the hero community, it's not the same without the real history. I liked when a writer came and built up upon decades of continuity to make something even bigger. Characters lost their development and nothing much of value was made up to replace what was lost. Sometimes I feel like they are empty hollow shells of their former selves. I think the DCU is a less wonderful place without all the history. It was something unique in comics, it was a shame to lose it.
Not to start a Marvel vs. DC thread, but people always say Marvel characters are a lot more interesting than DC's which I've always said it's a lie that people who don't really read DC say. But I think after Flashpoint, they're right.