Easy way to merge windows

Ability to filter tabs (not just use built in search)

Ability to quickly save snapshot of session to persistent groups

Display ? button display "help" in a separate window (like you do with i/"info" button)

Add an icon to quickly send users to this page so they can post feedback/requests

Option to always display tab/group counts (not just when node is collapsed)

Indicate difference between TO and TO cloned view in the tab title