1 Add HideBug.js to the project.
2 Select the script in the Project window.
3 You will still see variables aTransform and aGameObject, but the other variables and even the arrays of Transfom and GameObject are hidden. It should be consistent.

Actually without @HideInInspector the behavior is same. And I think there should not be any fields like this for script, script is not object and we can't add objects to it's fields. In cs there is no any fields in Inspector for scripts like this.

So should not be any fields like that.