If Nintendo could be trusted to not over-price the cards they’re actually a super cool idea for some games like Pokemon since they’re a cheap way to distribute codes, etc. pre-internet. I really liked the Eon Ticket and the trainer cards whose teams you can battle.

Edit: People are making their own and printing there own and I always thought the idea of being able to print your own to distribute to friends and stuff would have been super cool. Imagine being able to give your friend your secret base in R/S/E via that or print your team and have your friends battle them or share your Mario Kart Super Circuit lap times/ghosts via it and stuff. We need a cheap way to transmit data that isn’t either via the itnernet or something cumbersome/expensive like a USB stick, burned disc, etc.