I've wanted a tab sidebar for ages and this is a step in the right direction. However I was hoping for something that worked *in addition* to the horizontal tab bar as a convenient way to access tabs in a list view, silimar to bookmarks. It's useful ...
I came to suggest the same thing. I've been opening a bunch of tabs from the same site, and now I'm done with them all, it'd be very handy to have a tab right-click action to close them all at once.