Very happy to hear you can buy cards in battle, running out of stickers in Sticker Star was always frustrating. Though I'm curious to know how that would work, would Mario call a Toad to interrupt battle and sell cards? Perhaps Huey can just make cards for coins or something.
Also very glad you can use multiple cards in 1 turn without the battle spinner. That will make battling a lot more fun than in Sticker Star, and I already loved Sticker Star's battle system.
Not having to backtrack to a place to turn things into cards is another welcome addition. Though I worry about the comment of replicas being found in the overworld easily so it's all right to use them. Wasn't this also the case in Sticker Star?
Overall I like what I'm hearing, and it sounds like the battle system and overall gameplay will be a great improvement on Sticker Star. Considering that its gameplay was what I loved most about Sticker Star and I saw tons of potential in it, this makes me really happy. Can't wait to get this game.
Now hopefully the next game also adds a more interesting world and characters, and I'm set.