1) Difficulty level and smithing skill text can overlap. That can be considered a bug. The suggestion is to make the difficulty text different because it isn't very apparent which one is the order difficulty and which one is the actual difficulty of the item.
2) Make it default to show only unlocked pieces as the locked parts don't really matter. This may confuse new players though so it could be better to save the state of the crafting piece filter.
3) Similar to the civilian icon for the blades; add a bastard usage, spear bracing, couching, and a throwable icon for the appropriate handles and a dismounting icon for appropriate guards. I would understand if the handles get rejected as they are different usages and not an attribute like CanDismount.
4) For the hooked guards that can dismount, have an icon next to the civilian icon as it's not a usage unlike the others but an attribute. (It also makes sense to have it on inventory item tooltips as well.)
5) Category name "Two-Handed Polearm" is a bit misleading as it also covers one-handed ones as well. Maybe that can be changed.
6) There is a "bonus against shields" icon for this single javelin blade. This icon doesn't appear on axes even though it's an attribute for every single one of them. Is this intended?
7) Hide inferior refining formulas as they only provide clutter.
I'm sure you are aware of most of this but I wanted to list them anyways.
2) Make it default to show only unlocked pieces as the locked parts don't really matter. This may confuse new players though so it could be better to save the state of the crafting piece filter.
3) Similar to the civilian icon for the blades; add a bastard usage, spear bracing, couching, and a throwable icon for the appropriate handles and a dismounting icon for appropriate guards. I would understand if the handles get rejected as they are different usages and not an attribute like CanDismount.
4) For the hooked guards that can dismount, have an icon next to the civilian icon as it's not a usage unlike the others but an attribute. (It also makes sense to have it on inventory item tooltips as well.)
5) Category name "Two-Handed Polearm" is a bit misleading as it also covers one-handed ones as well. Maybe that can be changed.
6) There is a "bonus against shields" icon for this single javelin blade. This icon doesn't appear on axes even though it's an attribute for every single one of them. Is this intended?
7) Hide inferior refining formulas as they only provide clutter.
I'm sure you are aware of most of this but I wanted to list them anyways.