Not in list filter

Adding a "filter" to show connections that are NOT in a list would be helpful to every single client that you have.
I add connections daily, and those need to be displayed in a way that I can add them to one of my lists. If there were a filter for that, it would make life easier for ALL clients, not just me.
OR the connections that ARE in a list need to have some type of label on them showing the list name that they are currently in.
Headline: Job Title: Company: Location: --> List:<--- You could easily tighten the columns to fit in "List"