It is an interesting phenomenon (perhaps only possible in the age of the internet) that RAH is still able to be a subject of news long after his death. In fact Google has a feature that graphs the frequency of Heinlein mentions in news articles over the years and it has held remarkably steady (though it is currently declining) since a year or so after his death.
And regarding a legacy I believe RAH would have been quite proud of - he is mentioned in a blog here about a fantasy con because of the blood drive -apparently they broke the total unit record for any con.
http://www.sequentialtart.com/article.php?id=1535