Yeah, I'll actually be pretty disappointed if he doesn't go and mine all the really old classic stuff for his take on the character here. Pretty sure he will though, something about the Adam West hat-tips kind of seals that for me, seems like the approach Matt'd take.
I can take or leave the Ace Chemicals/bleaching shiz, the Red Hood shenanigans, hardly a necessity - you can riff on all that, make it drug-related rather than a chemical bath. But overall, big-picture, let's look back and do a Reeves-twist on the classic.
Romero & Nicholson in a blender visually, gothed/noired-up 10-15%, with the viciousness & depravity dialed up to, oh, a billion. Making Reeves-Riddler seem like Regis Philbin hugging puppydogs.