@AshDene I haven't encountered that in an RTS. I have in 4X, though. I don't think being that far zoomed out on an RTS would be helpful - you'd lose track of units, micro would become incredibly difficult if not impossible, and the FoW would become a lot weaker. It doesn't seem to fit the genre design, in my opinion.
Not to mention the accessibility nightmare it would be for the visually impaired.