I'd better prefer Vivaldi's solution: an optional narrow (semi hidden) sidebar and/or a quick toggle button on the toolbar. Because in Opera the sidebar is a part of the window and opens not inside the frame.
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@appdana These are fantastic ideas. Would love to have a Home button and configurable Homepage. And the Menu Tab seems like it doesn't need to be there.
Users need to be able to set our own added search engines as the default search engine. This is pretty much a standard capability for browsers. Can't think of a single one that doesn't allow for this...except Opera.