Looking through both Volume I and II I noticed that there are a few factors that can increase a weapon’s damage above its normal lot.

For example the Warden’s Sword is always ‘at least’ Weapon: 3, for a typical long sword, because of ‘superior crafting’.

First Question is at what points do superior craftsmanship increase the weapons damage capabilities? Is it entirely in the hands of the GM, or is there an official answer? And if its GM dependent, then what are yours?

The Second Question is for Items of Power. Like the above question,  is it possible to increase a weapons damage permanently (not the one-shot attacks)? What Price would you put on each point increase? Or would you allow it at all.

I would like to know since I’m trying to focus on a “Legendary Weaponsmith” concept.