This is what has ALWAYS bugged me about both post-Resurrection Hal and Barry. Both of them don't act like people who have returned from the grave or from the brink. They essentially reverted back to idealized versions of the characters w/ the occasional REMEMBER WHEN.
Hal should have been a wise and learned man who saw eternity, life and dead due to being the Spectre. He should be haunted and solemn. Instead he's a wild man devil may care hot shot like the good 'ol days. Same with Barry, being trapped in the speedforce for decades should have done SOMETHING to him. Anything. Like Hal after a few issues from his return, it was business as usual... until the Nu52.
I feel like there was so much wasted potential. It's always this way though. A character comes back and they never really do something with it. There's no game change. Fuck, at least Ollie seemed really fucked up by his return, which was a damn plot point.