View and sort by Tags in Subscriber List

Attention: Squarespace Developers, 

In the Profile section - Subscriber List, we have the ability to add tags to a contact, but it would be useful if we could have a tags column in the list too. It would be useful to be able to sort tags in the column and also see which contacts have been tagged already and which are not yet tagged.

Adding to this, when after creating a segment from a tagged list it would be useful to be able to add new contacts to the segment.

I would appreciate any advice or feedback on the above.