As a big fan of weaseling, I also started a script project to improve the IADS. The scripting support in DCS opens a lot of possibilities to customize the behavior of the AI on a case per case basis.
However, I never finished the project as the scripting system provides a very limited set of functions to interact with the ground groups. Currently only limited stuff can be done through changing "alert state".
A function to toggle on/off specific radars (sensors) within the group ('alert state' affects all sensors, including visual), for example, is something that the scripting system really needs.