I'll never understand the appeal of Afflecks Batman. Acting skill aside (Bale is a better actor than Affleck by far), what exactly is so good about Afflecks Batman portrayal? It wreaks of a contrarians dream version of Batman that goes against everything that makes the character so unique and special. There's virtually nothing about his portrayal that I cared for, and I'd go on the record of saying Val Kilmer was a far better Batman, and i even get more entertainment out of Clooney.
In terms of depiction, I guess it's subjective whether you much you care for an older Batman. I like the idea, but it's not something I would have liked to see in that context, especially after MOS. Perhaps Snyder with his deconstructionist sensibilities thought an older, jaded Batman fit into that. And it certainly does, but for the love of God, don't make him a murderer.
An older Batman I can get behind like Keaton coming back or The Dark Knight Rises or Returns, but an older Batman is NOT what I want to see as the status quo live action Batman. I have zero interest in an older Batman series of films. At least build up to it. The Dark Knight Rises may not depict an old Batman, but I connected much, much more to a strung out, retired Bruce because of the writing and directing. And the fact that it's earned.
For the record, Kilmer is my third favorite live action Batman. I'm not saying he's mind blowing, but he does a terrific job of playing a very straight forward, crime fighting, heroic O'Neill era Batman and can play it straight while still doing fun stuff.
Affleck could have been decent as a BTAS type of Bruce and Batman. But in all honesty, that works for me as a cartoon, not in live action. Plus Affleck ain't Kevin Conroy, even if it's just a voice.