The point is that the window manager will do the window management and I simply don't. There's nothing to do once it's running. Except select the window you want, the workspace you want and pop-up/down any temporary ones. I *never* in my life want to move or resize another window. I hate it. I will never have a window (partially) obscured by another one. I switch contexts with practically zero delay and I don't need to look for the mouse, pointer or try to move anything out of the way. Ever. I love that.
perhaps running acme or sam instead of rio will solve your problems? there everything is tiled away nicely :)
