It would indeed be a cool feature, and it will draw attention to Vivaldi. But to be fair, there are already some great ad and tracking blockers out there. But a standard feature would be nice. I would say, look at Ghostery for some inspiration.
I know this is an old topic, but for any searchers who come across it: See a workaround in This Script Copies Description, Separators, etc. from HTML to Existing Vivaldi Bookmarks. It can copy Descriptions, Keywords/Nicknames, Tags, and Separators to old existing bookmarks or to newly imported ones.
Yesterday my computer updated Vivaldi to the latest version and I decided to give it another try because why not? Got all my tabby tabs copied to it through tab session manager and set it up to have them listed vertically.
I mean, it has its advantages because you can make it wide enough to see more than the minimum size on firefox but then as I was testing some sites I noticed some of them will revert to a collapsed version if you use the tab panel. Like youtube won't keep the side menu opened all times if you have the panel on, regardless of the width. What a bummer.
I also noticed that every time I open the browser, although I have the last tab loaded, the scroll is way up on the list and you have to scroll all the way down every time you fire vivaldi up again. It's also kinda inconvenient to have the new tab + icon as a part of the scrollable area buried below all the tabs instead of always showing like the trash can icon (and like it is with tabs at the top).
But one day we'll all be laughing at these trying times 😂
@izacks It may claim to be rejecting 3rd party cookies but under the current schema it's not, unless you are accessing EVERYTHING currently on vivaldi.net and none on vivaldi.com (which I think may now be possible.) It is not, or should not be, possible to log in on two linked domains unless cookies from both are accepted. It is a security vulnerability to do so. It is just possible, I suppose, that firefox is treating them as un-connected domains, which it should not - as they cross-reference each other.
@waterfire I am also a long time Firefox user who has switched to Vivaldi.
There is nothing better than Session Manager by Morac for Firefox. It automatically makes session backups, and restores them superbly.
As far as I know, Vivaldi only has a manual session backup, so that is useless for me.
Session Buddy is what I use. It is nowhere near as good as Session Manager by Morac for Firefox, but at least it makes automatic session backups.