Funny that you mention 'ancient window management'. Tiling window managers are basically a continuation of terminal muxing and are thus more ancient than stacking window managers. Personally, I think going hybrid (stacking window management + spectacle/magnet.me) is the way to go. Best of both worlds :)
Fair point about my word choice. I just think we can do better is what I mean. I think I agree with you, but I'd need to see it in action. Currently I just use workspaces for whatever I'd use stacking for.