SV .. I, too, think lineage information is really valuable and I am not breeding roses ...
Since I am now gardening in a more difficult climate, knowing the lineage of a rose really helps me find the roses that I think will do well up here.
I am also totally fascinated by some of the combinations breeders come up in their breeding lines.
Along with my reading homework, my mentor had me making my own lineage trees. At first I hated it, but the more I got into it, the more interesting it became.
Yes, Jack was a great rose writer. He could make things that are really complicated seem easy to understand.