I'm going to say this right now.
I have obtained
all of SnS and SnS II in both Banjo-Kazooie and Banjo-Tooie. I own Logs Lost Challenges and have completed it accordingly. I have all SnS parts in Nuts and Bolts and the blueprints.
There is no exclusive or hidden information given to you by completing this.
I believe it was said, in a rather amusing and satirical facebook post, Tooty is still playing a game of hide and seek.
In all seriousness, she was taken by the "Rubbish Characters in Video Games Police".
I have doubts for downloadable content, but I suppose we can always hope.