I may be wrong but I think "adding notes", while maintaining the upvote mechanic for the original post, would require a chain upgrade to make that possible. Since a resteem is merely a share of the original comment.

The question then would become does the curator (resteemer) also deserve the possibility to earn for finding.

The ideal comparison here is Twitter's dual retweet mechanic. Just retweet the original tweet and have all RT, Favs, and replies be on the original tweet or Retweet with comment, where the original Tweet is shown in line, complete with regular mechanics but the "comment tweet" becomes its own post... with an embedded post.

It's not that simple for that feature.