Weekly randomized bans to create deck diversity
It gets boring to play with/against the same decks over and over, and if you try to deviate from the meta, you probably won't be winning much, which isn't fun and impacts ranking. A possible solution is to add a new game mode where a different set of cards gets randomly banned each week. Players would have to create new decks based on the week's restrictions, which should lead to new, and thus, interesting matchups.
I would disregard current bans and then ban and/or restrict n cards randomly, having each card's probability of being picked for the ban depend on how much it gets played. This would require some fine-tuning to determine how many cards should get banned to really have an impact on the decks, what probabilities should be used, whether to always ban n cards or to just set the probabilities for each card and let rngesus decide how many get banned, etc.
I think a basic solution could be implemented and released to then be refined based on feedback. I wouldn't mind if a week's decks get too wacky since the point is precisely to make things interesting. Even if most meta cards get banned, it'll allow us to use cards from our collection that we would rarely pick, which I think would make things interesting.