A few things I want to point out that might be possible..
-It might be possible to save the screen shots on the SD Card in a JPEG format.
-I don't believe this will replace the trophies.. We will probably be able to collect trophies again but some of the trophies will be marked as assist trophies.
-Some stickers might be unlockable already if you have Wii game saves on your Wii.
-There will probably be over 1000 stickers.. It's not that hard for them to grab already made pictures from older games and turn them into stickers in Brawl. (Most of these stickers we have seen already in game manuals and on box covers etc.)
*Who is Who*
Left Page-
1.Elephant (Yoshi's Story)
2.Rawk Hawk (Paper Mario 2)
3.Monkey (DK?)
4.Mother Earth Symbol (Mother)
5.Star (Super Mario Brothers)
6.Spiky (Kirby)
7.Balloon Fighter
8.Sheriff/Cowboy (Wild Gunman) or it could be (Sheriff)
Right Page-
1.Dice (Mario Party 8)
2.Toad (Super Mario Brothers)
3.Red Gazelle [Driven by Clinton "Mighty" Gazelle] (F-Zero)
4.Hammer Bro (Super Mario Brothers)
5.Dog (Nintendogs)
6.Dr. Lobe (Big Brain Academy)
1.Hammer Bro (Super Mario Brothers)
2.Star (Super Mario Brothers)
3.Kirby (Kirby)
4.Monkey (DK?)
5.Lon Lon Milk (Zelda:OoT)
6.Elephant (Yoshi's Story)
7.Dog (Nintendogs)
1.S. Goroh (F-Zero)
2.Wario (Mario Strikers)
3.Monkey (DK?)
4.Spiky (Kirby)
5.DK (DK)
6.Pianta (Super Mario Sunshine)
7.Dice (Mario Party 8)
1.Ike (Fire Emblem)
2.Star (Super Mario Brothers)
3.Mother Earth Symbol (Mother)
4.Elephant (Yoshi's Story)
5.Dr. Lobe (Big Brain Academy)
6.Sheriff/Cowboy (Wild Gunman) or it could be (Sheriff)
7.Wario's Car (Wario Land 4/Mario Kart:DD)
8.Toad (Super Mario Brothers)