Honestly, New 52 is when I jumped in so I can't really make a comparison to past continuity. All I can say is that I've generally been pretty pleased with how they've handled things. There have been some excellent story arcs, IMHO.
One thing that did happen to Detective Comics recently is they reverted to the old pre-New 52 numbering system (I think they did it for Action Comics too). When New 52 happened they reset all the issue numbers back to 1, and that made some collectors unhappy because they wanted "Issue 1000". Eventually DC decided to go back to the old numbering system for a few titles, so the numbers jumped from Issue 52 to Issue 900-something after a recent storyline event.