As title.
I keep seeing that the Air Ring is considered trash, but why exactly is that?
The stance makes you harder to hit (plus you can spend opportunity to become extra hard to hit by ranged attacks) in both combat and scheming by increasing the TN by 1, and at school rank 4 by 2, it got a neat AoE Melee attack, some nice Shuji and Invocations. And it boosts your Focus and Vigilance.
So what's the big issue with it?