David,
You say he has no interest in COLLECTING cards or memorabilia, but is he someone who would go to the baseball, football, etc HOF museum? If so, then I'm sure he would like the National for at least 1 day. I'm betting there will be a few interesting items there (uniforms, jerseys, etc) that are high roller or museum quality pieces.
FWIW, I'll be there all week so hope to see you there and catch up!
