Re:Iconization (now OT) (Score 1)

Iconization is a fairly fundamental and common window manager thing. I don't know how easy it is to configure something like sawfish to support this mode of operation, but it is generally the default for window managers like fvwm, twm, or even mwm. I would not be surprised if many modern alternate window managers supported powerful ways of controlling icons and iconification behavior; I know fvwm does.