I figure this thread is worth a bump for one reason. EASTER EGG HUNTING!
If you don't want to be Easter Egg'd, look away.
After doing the podcast (did that ever go live, by the way?) I went looking for the numbers Daniel mentioned.
Well, there are three sets of them.
The first say "I will return Batman" (700-500)
The second say "You will pay for what you did to me" (500-900)
And the third say "Fear will tear Gotham to shreds" (200-500)
Something like that.
Well, after doing a little more easter egg hunting, I found that there's a secret barge out on the harbor you can enter. And when you do, there's a bunch of cockroaches, a recently deceased person, and an invoice for Dr. J. Crane.
So what does it all mean?
Obviously that Scarecrow survived the Croc encounter, there's likely going to be a third game, and he will be the star. He was the only one not to make a repeat appearance, and the only main Batman villain to be out of this game.
I whited it all out, just in case. But I'm calling it now.