I have started a Google Document to lay out information on LRU and thoughts on re-design.

https://docs.google.com/document/d/183s5kpCotohJOhpFUhRZGJA2HaLE2vvUwQjpsvMcgYo/edit?usp=sharing

If you would like to comment, just request access via Google Documents.

Thanks

Frank Filz