Digging through, looks like I might be doing things different from you.

The way I configured it is that in-game drone recall is remapped to `.
Then I have a keystroke with target of Window: Current that simply emits `.
I have a series of clickbars that simply call this dumb keystroke on the window they are assigned to.

That yields a row of buttons that sits on my dxnothing window that I smash with my mouse to recall drones at the end of a site. So, not quite what you are looking for I suspect.