Proposed Rule Change: Fettered Cards
Once again, there appear to be more bans coming for Magic, which is fine given the current rules, but I think it will be a persistent problem until the rules of Magic allow for a more dynamic form of banning, i.e., players should be able to prevent the use of certain cards during matches.
My current term for this is "fettering" and the way I envision it, each player would have a fettered list of five cards (in Standard, a larger list in older formats) that if either player has them in their deck, changes those cards into fettered cards. Fettered cards will have no abilities/types, will not be able to be cast, discarded, etc. Basically, they will be useless while still taking up space in libraries and hands. Lands who only have mana abilities (e.g., basic lands, triomes) will not be able to be fettered, but other lands, (e.g. Field of the Dead) could be fettered. Because there are likely corner cases I am not considering, the specific rules would need to be developed and it might be easiest to have an "unfetterable" list that states what cannot be fettered.
As an example as to how this might work let's consider Uro, Titan of Nature's Wrath. If players found Uro to be a problematic card that their opponents were regularly using, they would add it to their fettered list, preventing themselves and their opponents gaining benefit from including the card in their deck. This would lead to a weakening of Uro decks (because it would no longer be useful to have Uro in a deck) so fewer players would include Uro in their decks, instead they would look for other cards to achieve a similar result which would increase deck diversity and avoid the need for Wizards to constantly decide whether a ban is necessary. Really broken cards (like Oko, Thief of Crowns) would be managed by being put on everyone's fettered list until so few people used it that it wasn't a problem.
By selecting Uro and Oko as examples, I've focused on cards that ended up being banned, but fettered cards would also allow for players to limit their opponent's ability to streamline certain archetypes like a control deck by allowing the fettering of common control cards, e.g. Dovin's Veto, but given the wide variety of cards to accomplish common effects like countering, I think this is unlikely to cripple entire archetypes.