We have many lists used for segmentation. When using these in combination it can become very complex (and redundant) because we can "AND" list membership, but we cannot "OR" them within a module of logic. A useful enhancement would be to add an "Any of" option like we have with property values in filters.
List Membership options:
Is a member of (one list)
Is not a member of (one list)
Is a member of any of <-- new choice for multiple list values
This would dramatically streamline much of the filter logic we have in lists and reports.