I'd give it a 9. There were mile splits but they were announced. If you wanted projected finish times you can do the math yourself.
Showing a race on TV isn't meant to feel like your on a long run yourself with 2 hours of silence.
For getting what you're going to get (ie showing the leaders and maybe 1 or 2 big names not in the lead - Goucher) it was done well. They did show the women's 4 pack split as it was missed by a commercial they had a replay.