@jon
#Vivaldi is my favorite Chromium browser. Some of the features, like the ability to strip tracking info from links, is really helpful. I think it has one of the nicest looking reader modes that I've come across. The ability to hide specific UI elements until the mouse is moved over them has really helped with screen real estate on my small laptop screen.
But I wish it had a way to pin tabs across workspaces the way #ZenBrowser does.
Or how in Gecko-based browsers, when you take a screen capture, it will highlight different items on the web page automatically, instead of dragging a box to capture specific parts of a page.
If I could cobble together my ideal web browser from existing projects, I'd definitely take a lot from Vivaldi.