@Riot @Meddler Thoughts on making a new stat line for utility scaling?

The idea of utility scaling in general was great, but also flawed the fact that utility scales through the same stat as damage for abilities. Have you thought to create an entire new stat line (and thus, new scalings on abilities and new items) for the purpose of utility scaling?

Personally, I feel like a new stat line would be great for tanks and supports since they could make more decisive choices in how they want to play the game, and it could make for entirely new forms of "snowball" and playing from behind.

For instance, tanks with health scaling shields wouldn't over snowball by having this new stat needed to increase shield value, while not increasing raw tankiness. A mage with AP scaling on utility (orianna/lulu) wouldn't become too powerful in utility if they snowball and build for damage.

This would also create situations where a support would be able to build stats more desirable for them without the worry of supports going overboard on damage and just moving to other lanes, since the utility scaling would be separate from damage scaling.

Thoughts?