There's no denying Jake's talent or versatility as an actor. I just feel like he'd approach Batman too much like he did Dalton in that awful Roadhouse remake (and a lot of other performances as well, to be frank), drawing on his inherently whimsical side. That's a quality better suited for a character like Spider-Man, IMO. Speaking of Spider-Man, J. Michael Straczynski once wrote a fantastic, if contentious, story arc that culminates with Kingpin observing how Spidey is lacking his typical lighthearted, devil-may-care demeanor following an assassination attempt on his family that left Aunt May critically injured.