I use Raindrop.io to save my current session as a collection by selecting "save all tabs." I will explain the feature suggestion through the following use case:
* First, I save an initial session of tabs to a collection.
* Later, I want to continue that session, so I restore all tabs from the collection.
* During that session, I open new tabs and close some existing ones.
* Now, I would like to save those tabs in their current state to the original collection.
* Currently, when I do this, the tabs from the second session are added to the tabs from the first session.
My suggestion is to be able to somehow (prob a configuation option) save the tabs of the second session instead of the tabs from the first session in that collection.
An enhanced version of the feature request would be to implement this in a window group manager style. Since Raindrop.io already opens in the sidebar, it could also be used as a window manager. If we can automate saving the last state of the tabs, multiple collections could function as windows at any given time. Switching between collections would then be similar to switching between window or tab groups in a browser.