I had some lego sets since 1992 (I was 7 year-old) and I always remember those boxes bringing us ideas about how to build and play with the bricks. There are MOCs in the internet, ideas books and videos. Side apart of these resources, would be nice to have such help in the instruction booklets and/or boxes. These are some examples about what I'm trying to explain:
https://docs.google.com/file/d/0B8JF2EWn2pH8eXZZZWcxZDJyZEE/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8LXBOUU5fTTBZVmc/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8WlFLSHJ4dnhvM2s/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8SnBVbmEwSndvY00/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8aUpLcGVZMnRmOFU/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8WlV5c3RUR0dGMVU/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8V21LT2Z6b1BscW8/edit?usp=sharing
https://docs.google.com/file/d/0B8JF2EWn2pH8Ylh1WEcteVJROTg/edit?usp=sharing
I know everyone that has at least one of these sets spent some time building the illustrated ideas after doing the main one, so that's why would be a great addition for the kids in the new sets.