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I can see a real upside to being able to deal with problematic cards/strategies as needed and not having to deal with waiting to ban/restrict them, but on the other hand I see a real downside in making it harder on players to keep up with this information

(Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.) Goaded creatures your opponents control can't block

Im not friendly, and this isnt my neighborhood. Illustrated by Pauline Voss Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp

Opponents wont want to give you a draw more often than not, making this bird brutal

Furthermore, there are many more widely played formats (such as Tiny Leaders) I could provide a link to, but the reality is that if you include all those formats in your definition of previously banned, some person will eventually just invent a format that bans every card but basic lands, and therefore will be able to tutor all cards