I haven't played this game yet, but I've read the "Super Mario Wiki" and I will say this: I like the concept of using more Mario elements in the battle system, like Mario turning into Fire Mario with the use of a Fire Flower! And how some stickers are reminiscent of some noteworthy Badges! And I want to point out I CAN NOT get over specifically how they made TWO versions of Pokey! Not just the yellow Pokey and Pokey Mummy we all know and love, but the yellow variety and GREEN variety hailing from Super Mario Bros. 2 (USA) and making them safe to jump on! I'd LOVE to see that in a new Paper Mario game!
But still, and getting back on topic, from what I've heard and watched on Sticker Star, I'm still disappointed in Sticker Star's gameplay. It has originality, yes. But from what I can gather, collecting stickers, backtracking again and again and again just to clear one level? It honestly "Grinding" sound like it's a simple walk in the park, no matter the game (which can be a big lie.)