What about the Pirates?
they already have pirate themed costume pieces, along with a pistol weaon customization thats a flintlock pistol
they dont have much else dedicated to pirates except the ghost pirates

But do they have Pirate Swagger?
I know they have Pirate Costume Pieces... but they don't have the ones I listed.
This is a Booster Pack Suggestion not just for adding costume pieces.
There's already a flintlock pistol (which is generally what pirates are depicted using) and a rapier, though rapiers don't really scream pirate to me. I think maybe you were thinking of a cutlass?

maybe later down the road, but right now lets let them finish the origin boosters first.
First off we have the costume set called "Pirate"
Hats
Death Beard
Buccaneer
Matey
Swabby
Detail 1
Left Eye Patch
Right Eye Patch
Detail 2
Handlebar Moustache
Handlebar Goatee
Beard Full
Musketeer
Upper Body
Baggy
Baggy 1
Baggy 2
Gloves
Folded
Pirate Hook
Belt
Leather Eyelets
Large Leather Eyelets
Lower Body
Tucked in
Pants
Baggy
Boots
Flat (barefoot)
Folded
Pirate Folded (peg leg)
Pirate Smooth (peg leg)
Weapons
Valkyrie Blade
Fantasy Sword
Scimitar
Longsword
Rapier
Main Droite
Main Gauche
Faer Dagger
Flintlock
And that's not counting any of the skeleton, zombie, dead stuff for those undead pirates.
...Pirate Swagger? As a Travel Power? If anything, it'd be an un-travel power. Like Walk.
But I do want a Shoulder Parrot.
NPCs: A Single Method to Greatly Expand Bases
So Sitting here talking to my kids today. I was thinking about the new Ninja Booster in the Martial Arts Booster Pack. We got to talking about the Ninja Vs. Pirates craze from a few years ago and discovered that City of Heroes is Ninja biased.
Me and my girls believe that you should in turn add a Pirates Booster that incorporates:
---Costume Pieces---
-Parrot as shoulder costume piece
-Large Square Belt Buckles
-Jack Sparrow Dreads
-Large Puffy Pantaloons
---Weapons---
-Rapier
-Musket ball Pistol
---Emotes---
--Costume Change emotes
-Bomb Explosion
-Sea Sick
--Character emotes
-Tankard (pull out tankard of ale and start drinking it)
-Pull out Musket and wave it around
-count bouty(pirate chest pops open and start counting money)
---Pirate swagger as a travel power---
We just wanted to wanted to Right the wrong and make just out of the UNJUST!