Ironside was going to be my choice. He even looks like an old Bruce Wayne. Plus, he's got the voice to go with it. I would NEVER consider Stallone to be Bruce Wayne or Batman. At most I'd have him play a mob boss to go up against Bats.
I'm for it! What exactly does Stallone look like these days anyway? But hey next year Shatner will be 80 and he's still kicking ass. So being 70 can't be too bad for Stallone.