In the original proposal, I also talked about people on holiday. Without clicking on the person, clicking on the unit and clicking on attack, you don't know if you can or not. For banned, it will at least write the farmlist, but if the player is on vacation, it can be put into the farmlist completely at ease.
Another thing, why can't banned people be put in the farmlist too? If I'm banned no one can add me, but if I'm unbanned everything is ok and we can add?
Of course all this options would be optional like seeing the amount of treasures on the map and where the main villages are. Just another UI improvement.