I'm hoping that even though it shares resemblances to Sticker Star, they learned from the criticism. I know I won't decide whether to get it until I've read opinions and reviews, from critics and gamers.
If it has improved over Sticker Star 1-1.5 mil, maybe more if it's really good.
If it's Sticker Star 2.0, 500K to 1 mil (because it's still all Nintendo has this holiday season).