I hope there is a full database of cards available. It's frustrating knowing I need something like a right-handed platoon 1B but not being able to see the player rating splits in the auction house, or not knowing if there is a card that would fit perfectly in the price range who exists but isn't listed at the time.
I play FIFA ultimate team too and get a ton of enjoyment out of looking through the card database on futbin and theory-crafting teams. Plus it's something people can browse at work while not actually playing the game to get that fix in.
https://www.futbin.com/19/players