Intercepted on the localiser command

Hello, not sure if this has been requested yet, but I have a suggestion that would allow the controllers to know when the pilot has intercepted the localiser of the runway and no further vectors are needed and it’s safe to hand them off to tower or unicom. A simple command like : AmericanXXX, intercepted on the localiser runway 24L.

Let me know what you guys think.

Planes intercept at an ATC given height, so when that hight begins decending, it will give ATC and idea, also ATC hands then off to tower and unicom at a distance from the airport, not the hight