My ideal state of this feature is probably one that mostly behaves as "normal", but lets me mark individual badly behaving, user-hostile applications like Zoom as unable to steal focus when they abuse it.
I like KDE a lot, but this part of it needs work.
Also don't forget that rules can interact with other rules. For example, window size interacts with all of: "fullscreen", "maximized", and the "geometry" options (commonly set to more than 1 pixel for terminals).
That said, I am really not a fan of the recent UI-pessimization of the settings screen to require you to type out the setting you want rather than have tabs listing all the various options in a discoverable manner.