just curious, but what do you base your speculation on? and how is it logical that he's playing nigma/riddler over any other character? walk us through this logic.
talk about refusing to admit the obvious...the guy himself says that he plays a good guy.
I think the secrecy of the role leads to Anthony Michael Hall playing a known Bat Villain. Again, if he is playing John Due X: Batman Wannabe - the secrecy is unnecessary.
You then have to look at all possible Batman characters that would deserve any decent amount of screen time on film - or at least a role appearing through out a Batman film so early in a franchise. That eliminates most male Batman allies, though I will keep open the slim possibility of him playing a fellow hero. The idea of Anthony Michael Hall playing Vic Sage or Oliver Quinn, for example, while a long shot - is a possibility, though very slim.
I then have to Batman villains. The lack of Guy Lewis and Thomas Roach takes away the possibility of Black Mask. You need to establish the long standing relationship between the Waynes and these characters to really give them depth - and with Nolan, he would want to cram as much depth to these characters as possible.
Harvey Dent's corrupt aid, Vernon, would seem to be a possible contender - and I initially thought this would be Anthony Michael Hall's role. However Aaron Eckhart as filmed many scenes in Chicago, as well as all the court scenes, and Hall was not on-set. Anthony Michel Hall is not Vernon.
Of course you frequently point out that AMH will probably be playing a Batman wannabe. While again, I believe the secrecy of the role takes away that as an option, there has also been several films shot with Batman wannabe's present - again, Anthony Michael Hall was a no go.
Riddler makes sense because outside of the Joker, Penguin and Catwoman - he is the most recognizable Batman baddie. I am going to safely roll out Penguin and Catwoman for obvious reasons (not to say AMH would not look good in a skin tight leather suit....or even a monocle) - this would justify the secrecy of the character. Also I could very easily see Nolan making Riddler a morally ambiguous character: especially when Nolan has himself admitted that he is heavily influenced by The Long Halloween. This ambiguity makes the Riddler fit even the AMH made of the View: which though seems to be pretty cut and dry, IMO has to be regarded with suspicion. If we are not suppose to see Riddler as exactly a villain, and even a good guy in parts of the film - then his declaration is a perfect, and plays brilliantly with the tight lip policy about his role.
Of course I am further backed up when I consider the accounts from BOF's source. We know Jett has a friend who has read the script. While not in any way how I came to my opinion - it does reassure me of my claim.