Man, Hollywood seems to be getting less and less able to understand how trends work, and how fans work. Here's the thing, if you make an alternate cut, with MORE in it, whether it's more effects, establishing shots, or CGI blood, you have to deal with the fact that the fans are going to see the cut with more in it the actual movie (See also: Superman 2, Blade Runner, LOTR series, The Lost World) and might not even bother with the original release. Why support the movie now when the one I want to see comes out on DVD for 14 bucks in a few months? Why watch (what many would consider but not me) a "censored" version of the movie? So there is the first problem, now here is the second.
DC in the last few years has tried so hard to be more mature to catch all the fans that have grown up, but in doing so they have only alienated a lot of them. So many of the new movies, animated and otherwise, are just all swearing and "adult themes". But the problem is that while they add these things, they forget to add an appropriate tone, setting, idea, and reason to have it. The heart is replaced with trendy dark grittiness. It's one of the main reasons I stopped watching their movies and most comics, and one of the big reasons my old "DC is best" friends, have sort of left that state. It's not about keeping comics kid friendly all the time, It's about keeping the comics friendly to what they are.