It would be extremely convenient to be able to open panes in tabs, and switch between the tabs using hotkeys, like you can in the browsers or in VSCode.
I know that there are a couple of community plugins for that (Obsidian Tabs and Cycle through Panes), but their behavior is a bit inconvenient and pretty counterintuitive.
VSCode also has “Open Editors” panel - a sidebar widget that contains a list of all the open files (for cases when the open tabs can’t fit on the screen). It is also extremely useful.
I really wish this functionality was the part of the core Obsidian app, it would make everything so much more convenient!