I've been using Opera for a long time and I really like the Workspaces feature, where I divide personal and work matters into different workspaces, but I'd like to group tabs within each workspace like the one in Google Chrome, for example:
Within the workspace work, you can have groups of tabs such as search, news, tools... each with a different name and color for easy viewing.
It would be interesting to have this feature native to Opera or some good extension that implements this feature. Worskspace with Tab Group would be awesome!