yeah, the yoking problem seems to be hard.
I wonder if some of those smarty-pants windows managers (shell replacements?) can do that. Hard to say. Anyone has a clue here?
I tried Skrommel's tool. I think it's great.
The way it saves a click on the taskbar slots is genious.
However, it does bring the window to front; I don't want that, it's very disorienting.
It may be trivial to fix that; I looked at the code and it seems he sends a mouse click to bring the focus (so it inevitably will bring the windows on top). So I don't know how to mod the script at first sight; it'd require some changes on the design I think (definitely possible with ahk).