Curt,
In your post, are you saying that the Native leaders who negotiated the ANCSA need to make reparations to the Native people or are you saying that the Native leaders at the time "sold out" the Native people and the Native leaders today need to "revise" the ANCSA ? 
What sources, books, historical documents do you recommend they read to educate themselves ?
 I would venture to guess that all the reparations or most of them anyway have already been made. I do know that recently the communities/tribes that came out of the ANCSA landless are about to receive both land and money from the Federal government. 
It has take forty or so years for this to happen but it is happening.