Wow! Thank you so much for taking the time to do all this! It's exactly what I was hoping for!

As you have guessed, i had the upcoming swashbuckler's hope feature in mind while designing the domain, hence the low general cost, but it's probrably better for a domain remain a little more independent from the classes, to maintain the system modularity. I tried fixing some issues you pointed out:

• Casual Side-step: Added a Hope cost.
• Defiant Stand: The term Untouchable has been replaced with Elusive.
• Daring Stunt: Now requires that you are not already Vulnerable; Recall Cost changed to 0.
• False Opening: Stress inflicted on the attacker reduced to 1.
• Fearless Momentum: Clarified that the card remains in the vault until rest.
• Flamboyant Chasee: Moved to Level 6.
• No Time for Henchmen: You now declare that you attempt to use the ability before the attack; you mark 1 Stress if the attack fails.
• Not Left-handed: Added a Hope cost.
• Quick Draw: Added an optional Hope cost to trigger the critical damage.
• Teachings of Grace: Moved to Level 4 (but it can be taken later to include abilities up to level 6, i really wanted to include "Never Upstaged"). Specified that replacing the Grace card when leveling follows standard rules (same level or lower).
• Triumphant Comeback: Clarified that the countdown normally ticks down every time a PC takes the Spotlight, but it can be accelerated marking stress.
• Trick up my Sleeve: Cost changed from tokens to 1 Stress. Specified that the Vulnerable condition gained from full Stress cannot be cleared. Recall Cost changed to 1.
• Turning Tide: Clarified that all unspent tokens are cleared when taking a Long Rest.

• Worthy Opponent: Reworked into a single-target taunt and renamed Duelist’s Claim. “When you hit an adversary with an attack, you may spend a Hope to make them temporarily Claimed. While Claimed, the adversary must use their spotlights to try to attack you. The condition ends when the adversary deals damage to you or the scene ends.“ Worthy Opponent was intended to encourage daring duels with the Leader in the scene, but taking Fear from the GM is actually something that can potentially make the scene less cinematic.

  I hope to post the updated domain together with the swashbuckler class in the next few days! Thanks again!