Dock sizes aren’t dynamic in Perspective. Once you configure a Docked View’s properties in the Designer, those are its final properties. As I’m sure you’ve already read the documentation, you can see that Docked Views scripting functions don’t really accept many arguments.
That being said, there’s nothing to stop you from configuring multiple Docked Views on a side (although as you’ve already mentioned you can only have one open at a time), so what you could do is configure one Docked View which is the Home/Status/Config View, and then a second which is the list of options and ALSO contains an Embedded View of the Home/Status/Config View anchored to the left.
You would need to pass params as part of the Docked View scripting, but I just tried this setup myself, and it actually works better than even I expected.