Might get some creative juices flowing. writing too much or to little can be bad, hope its not annoying to read.

Appraisal: to make the game more difficult. All items stats are hidden and bind to characters.
Active mystic skill that reveals item stats, one item per potency and an upgrade adding a passive chance to find an item.
Artifact that reveals all item stats.
Scroll bundles that reveal item stats and are made with fabric and spell thread.
Magic chisel to remove augments cost ingot and spell thread.
scrolls and chisel are stored like resources

Class Jack of All Trades: picks from all gray skills and a limit of 3 from mystic warrior or hunter

Skill Thief Artifact: steals an ability of choice permanently from a hero, triggers on pick up, only one skill per artifact making each unique. artifact cant be made.
Rare event: Mimicry is Flattening. A witch and blacksmith want a mimic as material.
The blacksmith will make a copy of a weapon it the party, fight with out walling.
The witch will make the Skill Thief artifact minus 2-4 legacy points double stunt chance.
You can decline the offer.
Claim the mimic yourself, add 1 legacy per hero
The mimic copies one ability from each hero at random, more heroes = stronger mimic.