EWR Use & Function?

[rwbishUP]

Aside from aesthetics, do EWR emplacements actually serve a purpose? Without using external scripting, I have never been able to actually get any type of use out of an EWR. I mean, is it not possible to assign late activated/uncontrolled interceptors to the coverage area of  corresponding EWR sites in game. Without having to use scripting or a trigger zone that matches the coverage area of the EWR, only with no detection variation due to landscape and structures. And, if you use a trigger zone, there's no real purpose to have the EWR. I just don't know why, with all of the trigger options, there's not an option to "link group" or "link unit" to EWR detection task, like;        

Assign (unit) (group) to EWR detection area

Tasking for Intercept or activate if constant detection for (xx amount of time)

Basically a simplified version of an external scripting process. This function is one of the #1 functions of real world operations, it should be a given!