Now that Split View is available, it would be great to have the option to right-click a link and choose "Open in Split View Panel" — similar to how "Open in New Tab" works. This would let the link load in the right-side panel without having to manually go through the tab list.
This would make Split View much more useful for research and browsing, where you want to keep your main page on the left and explore links on the right without interrupting your flow.