Ruby Sightstone Upgrade Idea

Ruby Sightstone is a relatively useless upgrade, to be completed last or never by supports. A mediocre increase in health and vision, ruby sightstone is a decidedly unexciting item. What if ruby sightstone wards did something more? Items like blue trinkets and skills like kalista w give vision for a short time after being seen. Adding this type of utility, a one second or two second vision giving debuff after being seen by the ward, gives RS a value in upgrading (probably necessitating increasing the upgrade price) it, more slot efficiency for supports, as well as an additional dimension to the vision game while giving supports a unique role that is often lost in high level play with so many wards placed.