Right, David. I don't love the idea of Gosling in the role, but he does have that pent-up intensity to him some of the time at least. He can do it, even though personally I don't find him all that threatening. Hammer's got the look down completely, he just strikes me as way too...I don't know, "normal".
Gamma, I don't mean full-on mentally-ill of course. But Bruce very much isn't a normal dude - might have turned out to be without the whole parental situation going as it did, but this is still a guy thinking a reasonable & rational approach to cleaning up the city is theatricality & spending all day sleeping so he can run around rooftops all night breaking wiseguy's teeth.
"Not overly obsessive"?

Kind of trying to figure out how anyone could possibly be
more obsessive than Bruce Wayne.
"Bruce" Bruce, the public persona, should come off as having all his **** together, absolutely. An entitled rich guy with the world at his fingertips, but basically an okay guy.
The real guy though, below that, should pretty much be like Keaton, a guy who when he's not out patrolling and beating streetpunks silly is basically sitting in his living room looking out the window hoping to see the Batsignal go off. Because this is his
whole life, dressing up in a freakin' bat costume and cleaning up the city with two fists and 500 million bucks worth of prototype gadgets. And everything else he does with his life (the parties, the corporate stuff, the Hugh Hefner image) is just purely a way to keep the other side going on, to allay suspicion and keep the money coming in.
I dunno, personally I just like leaning a little more Keaton with the approach to that than Bale. Christian's guy always came off a little...steady to me, for lack of a better term. Obsessive, yeah, but still sort of "normal". Affleck's sort of somewhere between the two, but might be nice to get a little into "please light up, Batsignal, pleasepleaseplease", even if he'd never admit to himself that's just how much he needs the whole Batman thing.
There shouldn't be an end in sight for this guy, something's clicked in his head and he's all-in, the same way the Joker "had a bad day" and is just never coming back from that no matter what.