Have you thought about a simple antenna analyzer function for Wizkers?
I got started on that with the rigcontrol Python package, but controlling the KX3 was a bit flaky. I put the ATU in bypass mode, then stepped it in TUNE across the band. Reading back the SWR was messy, because it is display data, not actual numbers. The result was written out in CSV.
Glad to share the code, it might give you a starting point for doing it in Wizkers.
The rigcontrol package is here. I made a few changes for the KX3. Probably should contribute those, but I can’t test that the K3 stuff still works.