It would be a nice extension, but I had my job split across separate windows, asked to extract 17 tabs by a single domain (ex news.com) to separate the news and it merged everything into one single window, the news site was not even sorted out at all

Edit to reply:
Yes, that what exactly I did, as the second option was naming my search and counting how much of the tabs will be extracted, so that sounded like a wise option to do