It's not necessarily a bad idea on the surface but it's the execution of that idea that I'm concerned about. Of late DC has had a nasty habit of going to the extreme opposite ends of the spectrum when things either didn't work out as they planned or when they desired to change the tone of a book or character and I'm concerned that this may just be another attempt at that kind of thing again. They also have a nasty habit of "fixing" things that aren't broken so I'm concerned about that happening as well. I'm also not finding the Rebirth offerings to be very diverse on top of my other concerns. It pretty much looks like a return to the "same old, same old" to me and I'd rather have something "new and different" then that.