In regards to Batman being the Frank Miller/conservative/Republican/drone type character, I doubt that they'll change Batman's character that dramatically after having Bale's/Nolan's for almost 10 years. It would be too much of an extreme adjustment for the general audience. 
My understanding was that Affleck would be a "soft reboot", which is to say that the leap from Bale to Affleck is like Keaton to Kilmer. The character is still the "same" while being sort of ambiguously different. You don't really know if the events of The Dark Knight Trilogy happened to Affleck, and since Bruce is now a seasoned Batman, you don't really know if Bruce left Florence, Italy and returned to Gotham and became Batman again at age 40. In other words, it's Bale's Bruce Wayne replaced by Affleck's face. 
Now, obviously that's not LITERALLY what Snyder/WB is doing, but that's the sort of ambiguity I think they're going for.
		
		
	 
so bale has gone under plastic surgery and got affleck face to retain his batman life in gotham for 24x7 at the age of 40 
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