Me too. Using @CJK's AppleScript I've made some minor changes* to my Desktop Spaces macro set and thus far during testing the tracking has been flawless.
@CJK's AppleScript, with the do script tweek, is the next best thing to a new Keyboard Maestro trigger: Desktop Space Trigger (The desktop space: The desktop space changes).
*The logic in Go to Previous Desktop that ran when the macro was triggered by The focus window changes is now triggered by AppleScript.
@August, as I mentioned above, the published versions of my macros/subroutines already track the Current and Previous desktops, albeit not as efficiently because I'm using the The focus window changes trigger. However, I'm unlikely to upload the test versions because @CJK's pseudo trigger requires additional setup that could deter new users. However, if @peternlewis is able to leverage @CJK's insight to create a new trigger in Keyboard Maestro, I'll certainly update my macro/subroutine set.