What about Bob Kempainen? He’s a relatively local guy for Quad Cities who I loved seeing back in 94 at the U of M running camp. I’d also love to see Benoit-Samuelson. I don’t know that either of them does speeches on any kind of regular basis but I would think that both would be very cool. Otherwise, I believe Bill Rodgers does appearances. He would be another interesting one.
I could go through a whole list of runners from the 80s/90s. As a running fan, I’m sure you could do the same. These three would be the first to come to mind as ones I would love to hear, though.