ban lists preventing adding subsets of active supersets assumes human behaviour

[jesopo]

being able to set +b *a!*@* after you've set +b *?a!*@* but not the reverse assumes that humans will always add bans in order of widening scope, whereas adding a subset ban of an active superset ban with the intent to later remove the superset and not the subset makes a lot of sense, and I am sure there are other examples