Please correct me if I'm remembering wrong/heard wrong/crazy.
Bendis' interview seems to heavily suggest that DiDio has a publishing plan of sorts (tied to the 80s somehow) that's going to be employed in the coming year and beyond.
DiDio went after Bendis and apparently had a "new direction" for the Superman titles in mind, which seemed to appeal to Bendis.
We know some titles are being canceled, more than just those in the Superman corner of the DCU.
Johns was clearly in charge of the thematic and publishing side of Rebirth. There were rumors that Johns had a group of editors/creators loyal to him and that DiDio did as well, though Johns was calling the shots while DiDio (and Lee IIRC) were not as directly involved.
Doomsday Clock is now delayed and there's more work for Johns at DC Films. This seems to be the result (speculative) of workload issues, but it could also be more. We may not know the full story, but it could be that rewrites are involved in DiDio is now in a stronger position of authority than during the Rebirth era.
There have been rumors of a Crisis-type event, allegedly with King involved.
If all or even some of this is true, are we looking at DiDio calling for Doomsday Clock to be rewritten in places to accommodate his new plans? This would also have the effect of sidelining what was pushed as a massive event (Watchmen sequel) in favor of Bendis on Superman and whatever DiDio's plans are.
I know that DiDio wasn't solely responsible for the New 52, but he was responsible for a good deal of it, most egregiously,
the removal of superhero relationships and marriages.
This could very well mean that Johns' plans for Superman (the central character to Doomsday Clock's story, per early interviews) have been rewritten or jettisoned entirely. The thought that DiDio's bizarre hatred for happy superheroes and an unproven Bendis could combine to yet again alter Superman for the worst is beyond unsettling.