I’d love to see this, too. ObsidianMD is built with ElectronJS, which does have the ability to customize the app on the taskbar.
In the meantime, a workaround could be to use the Obsidian URI in a shortcut. On the Windows desktop or somewhere, you can create a new shortcut that will open a particular vault in Obsidian. For example, you could make a new shortcut to open a Recipes vault with the URI obsidian://open?vault=Recipes. Older versions of Windows would let me pin that shortcut to the taskbar, but I haven’t figured out how to do that in Windows 11.
