Oh really? I’m surprised, as Adobe had been the standard for so long.

Adobe solves it like this on the top right corner, and the navigation is exactly as Safari does while adding a separator and the options to create a new workspace or delete an existing one.

Pardon the spanish. The last three say “Restore {{this workspace}},” “Save as new workspace” and “Delete a workspace.”
And while I agree either space of the bar could be used for this. Yet for me the left corner is currently in use with Quick Explorer, a quite popular plugin.
Regardless, I agree that workspaces are criminally underused because of how little accesible they are.