Outside of all things pertaining to Myndi Mayer, the first 24 issues of Perez's run are carried by the fantastic art and are really not that good story/pacing wise. Seriously, did we need to kill the momentum of Diana arriving in Man's World just to go back to the island for 7 issues to learn about the origin of her name? Even though the quality of the artwork plummeted, the later arcs about Cheetah in Bana-Mighdall, the Feast of Five and the second Silver Swan arc are all superior writing wise. There is not setup required anymore, they just tell good stories. Perez's run has the exact opposite problem of Azzarello in that it can be TOO detailed at times on filling in the backstory and becomes a slog to get through.
I might agree with you in regards to Perez and Simone. Not Rucka though But yeah, at least the basic mythology was superior pre-Crisis. And Rucka at least seems to have settled on a Bronze Age/Perez fusion for Rebirth which I think works better than straight up Perez.