First of all, I really don't think Didio deserves as much hate as people dump on him. Considering Waid has seems to have lots going on with Boom Studios and all, he probably doesn't have to worry about badmouthing Didio. And hey, it might actually even endear people to Waid and his work, since so many people will jump on the Dan Didio hate wagon at the drop of a hat.
Personally, I'd take it all with a grain of salt.
That being said, while I'm sure I'd disagree with a lot of decisions Didio has made... Blue Beetle, Manhunter and Question getting "co-feature" stories is pretty damn awesome. On the other hand...BoP cancellation and the awfulness that is Oracle: The Cure, and Tony Daniel.
(I only started reading Manhunter near the end, and couldn't quite get into it. But having her be the new Gotham DA? Not only does it provide a fresh start for readers who are new to her, but also puts her in territory that we're already familiar with and interested in.)