You can set the 7d to show you the af point that is tracking in zone and all points auto af. Just FYI
I'd be interested in knowing how to do this. Everything I've read indicates that AI Servo is the only AF mode where the focal points don't illuminate (and no beep either. I like the beep!)
I tested it on my son running in the yard yesterday. He felt like a dork running across the yard, but I made him do it anyway. Could not see what I was tracking (all points black). Results? Ehhh.... not so great. However, I was using my 24-70 where I would normally use my 70-200 2.8 IS. I just wanted to see if movement would trigger the lights. It doesn't.