[Autumn]

After putting the class through a few scenarios, I've managed to gather that yeah its feather generation is kinda weak considering how much its meant to spend, you'll never hit the cap in any match, on top of this it seems I was wrong about teleport skills they still consume feathers (Albeit only 1)

When you have to purposefully avoid spending feathers on even basic movement it becomes a bit of an issue, I'd say that some skills OTHER than Boon of Apus could use some touch up to how many feathers they gain the Firebird user, just a little bit to assure that the class plays out smoothly.

How's this sound?

Wind Flourish - generates 4 + Rank * 2 feathers when used (Instead of 2 + rank*1)
This skill doesn't really do any damage but it does disrupt people only a little bit, so I think this is suiting.

Preening - Converts magical feathers from unused momentum equal to 2:1 (From 1:1), if your momentum is over 3 then the amount is increased by 50%.
Similar to powerup's Ki gain except way way less and has no cooldown, drawback being that it doesn't generate FP like Powerup does, and you'd be essentially sacrificing entire actions to gain feathers, which is fair enough imo.

Some thoughts for the future perhaps if it still looks bleak, this is just my experience so far.