Item ban list in realms

Okay so, I have a problem, people get to places I don’t want them to be in my realm by using chorus fruits/under pearls, and I COULD possibly make every wall 8 blocks wide but that would be 1. Very long 2. Very annoying and 3. Pretty expensive. So, I’ve had this idea for a long time that, in the “Realms Settings”, there could be a new button titled “Banned Items”, once you click it, a GUI appears and each item you add to the list will be “banned” from your realm, and if someone with the “Visitor” role is carrying a banned item and tries to join your realm, they’ll receive an error message like “You can’t enter [player2]’s realm with [list of forbidden item(s)] in your inventory!”. then there could also be an option to make each kind of realm’s role have different forbidden items but that might be over the top. I think this simple change would be an ABSOLUTE life saver for the players that like to make Maps / Minigames that are opened to the public. Fingers crossed, I hope STRONGLY that this will be added, thank you for reading.