One of the things I would love to see, is Audio of the presentations at NHC be provided as well as the powerpoints.
So much information is given in these presentations that are not on the slides, or are presented in a format that "clicks" better than reading a slide, that I think it would be a significant addition.
Presently, there are a number of Podcast groups that attend NHC, I would think that a collaborative arrangement could be made.
The audio component need not even be hosted on the AHA website. Instead, the audio could be hosted by the Podcast group that generates the audio, and the AHA could simply provide a link to the Podcast group. This would generate traffic to Podcast websites, and possibly point AHA members to informational opportunities they were not aware of. I think it could be a huge "win/win" situation, but it would take some organizing.