Also, regarding trophies, stickers, and the Chronicle, how about combining them?
There would be a Library mode. Here, you can scroll through the names of Nintendo games or franchises, similar to Chronicle. However, instead of just a generic list, it shows you "shelves" and cases as in a library.
For each franchise or game - let's use Mario here - you see a set of shelves. Part of the shelves consist of trophy cases, where if press there, you can view trophies from that game or franchise. There could be some books as well - a "scrapbook" where all stickers related to that game/franchise are stored and a "novel" for the game or each game in a franchise that gives you general information and a description of the game.
By pressing the Z or whatever button on a trophy or Sticker, you can select them to load up when you start Trophy Hoard or Sticker Photoshoot mode. The two photoshoot modes here would be a click away, and any trophies or stickers you selected automatically appear. Of course, you can just select them from a list in Trophy Hoard or Sticker Photoshoot mode if you want still - the option is there.