On every TCG anime out there, there's no one that's ever touch the word "banlist". How about a supervillain with supreme dark power that can "ban" specific cards? Banlist makes people suffer... Even a cursed word of "git gud" never heals the suffering.
Well, actually I thought about a show that's like Spice and Wolf, Maoyuu, or Log Horizon, but using TCG aspects. Not too realistic like documentary, but has many "down to earth" aspect, rather than just summoning badass cards and shit.
I mean, you can't win games by only believing in the heart of the cards, don't you?