Hihi, here's what I came up with for armor and weapon craftsmanship during my lunch break. Most are copy-paste of existing craftsmanship upgrades, but there are a few new ones. Feedback welcome.
Clan-upgraded armor and weapons are not likely to be found in the hands of an outsider. If one were to be "found" unattended, it would be dishonorable not to return it to its rightful Clan. Sometimes, though, they are offered to honorable samurai as invaluable presents or rewards.Armor Upgrades
Crab: +2 damage (unarmed/grapple); Disguise -4; Comp +2; Cost +50%
Crane: ACP +1; Speed +5 ft.; Comp +5; Weight -50%; Cost +200%
Dragon: Spell Damage Resistance 4; Cost +50%
Lion: +2 gear bonus with Intimidation; Cost +50%
Mantis: Falling Resistance 2, +2 gear bonus with Sneak in 1 terrain; Comp +2; Cost +50%
Phoenix: DR +1; Const +1 save; Comp +5; Cost +100%
Scorpion: DP +1; Disguise +4; Comp +2; Cost +50%
Unicorn: Subdual Resistance 4; Comp +2; Cost +100%
Crab: Kaiu-crafted armors have horns and blades erupting from each plate, making it the definitive armor for (very) close combat.
Crane: light and flexible, Kakita armors have the reputation to be as easy to wear as normal clothing.
Dragon: imbued by years of training with Dragon shugenja, Mirumoto armors protect their wearers against the arcane.
Lion: adorned with an authentic lion mane, Matsu armors have a fearsome appearance.
Mantis: made for stalkers, Tsuruchi armors are camouflaged and reinforced against the occasional fall.
Phoenix: Shiba have a tradition for robust armors that protect the vitals of devoted yojimbo.
Scorpion: the Bayushi family make armors that barely hinder the wearer's movements and look mostly like regular cloth.
Unicorn: the Shinjo have a history of long journeys and have created armors that protect against the element's fury.Weapon Upgrades
Crab: always inflict lethal damage, target suffers 1 stress damage with a miss; Comp +2; Cost +100%
Crane: +2 gear bonus with Impress; Comp +5; Weight -25%; Cost +150%
Dragon: grants Whirling Strike trick (FC 221); Cost +100%
Lion: +2 threat range vs. lower Honor; Comp +2; Cost +150%
Mantis: adds lure quality; negates underwater combat penalties; Comp +2; Cost +50%
Phoenix: adds/increases guard +1 quality; Comp +2; Weight +25%; Cost +25%
Scorpion: +2 points of sneak attack damage; Comp -2; Weight -25%; Cost +50%
Unicorn: adds cavalry quality; +2 damage when mounted; Cost +100%
Crab: Kaiu blades, hammers, and tetsubo are massive and devastating, giving even Oni a pause.
Crane: the beautiful Doji blades are sought in the whole Empire for their superb steel engravings.
Dragon: Mirumoto blades are especially designed for two weapons fighting.
Lion: Akodo blades are powerful tools in the hand of the righteous, a deadly punishment for the unhonorables.
Mantis: the Yoritomo family forges unusual blades that remain just as useful underwater.
Phoenix: Shiba weapons are more tools of defense, just like the bushi that use them.
Scorpion: Shosuro blades are vicious, nasty weapons that slip easily between plates and scales.
Unicorn: the Utaku family forges weapons that prove extremely efficient on horseback.