A good idea could be to make it so you wont get duplicates of certain cards, like Slam or Factory Premium
i did implement that but it doesn't work for some reason and i didn't have time to debug.
I would say the bigger problem is lag. If you have more than 30 coins spinning, it becomes a slideshow. I'll work on that first
The game was updated, now you can't get duplicates.Also, while testing i found out that both Slam or Factory Premium are sometimes useful when you have 2 of them.Luckily, the new card "clone" lets you duplicate the effect of those cards.Good luck on your runs!