Mod Request: Idle TC notification

I was recently looking at my weak spots at the Game und then searched for Mods to maybe help me with those and my pretty much biggest problem was, that I am ideling my TC way to much and was kinda confused, that there wasn´t a Mod for that already.

Haven´t modded any Game ever and wanted to ask if someone who is into Modding could make such a Mod, that every time ALL Tcs are idle (So it doesnt play the sound over and over if you want to boom and can´t keep up every single TC yet) it plays a noteable sound or/and shows a clear visable message that your TC is idle.

As I said, I dont have much experience with modding, but i believe, that this would be a fairly easy one to make, especially because in the "Art of War" section in i belive "Fast Castle Age" there already is a function like this build in, which tells you, that your TC is not making villager (Could even use that Sound, as it is perfectly fitting already).

I really think that would be the single most helpful Mod to make in AoE 2 and me as many others i believe would be really thankful, if someone could make such a Mod