Gear Score, in my ARR?

[Genz]

No thanks, because I dont care about gears, I care about stats.

Darklight Helm, Cuirass, Gauntlets and Sollerets... good stuff, right? Maybe we'll reach over 9000 gear score with this, but there is not a single bit of accuracy on it. A melee with this stuff and some other str/attack-only jewelery is highly susceptible to be a miss machine against an enemy with high evasion, even if his gear score is high.
Another example, against Garuda, let's say you take a War to tank and another War to DD and kill the plumes. You'll want the former to have tank gear, and the latter to have DD gear. Gear score alone doesnt tell you what they have.

There is an obvious loss of information going from multiple numbers (attack, accuracy, etc.) to only one.

Another way to put it : gear score already exists, it's called stats, and it's more accurate.