I may be running a home brew for some friends and am aiming for a low magic setting, not in the sense that's it's weaker but that's it's incredibly scarce, like in lord of the rings or Zelda. The same logic will go to magic weapons/items where even the simplest of these are very rare and very valuable commodities. However given that equipment is a large part of leveling progression, not to mention getting better equipment is always fun, I wanted to delegate the standard plus one to attack and damage enchantment to the appropriate crafting skill for the item. This makes plenty of sense to me even thematically and otherwise I've always found it kind of silly this wasn't the case in the first place. What would be reasonable (reasonably hard DCs don't want these to be too easy to make) for making such items considering crafting masterwork requires a DC of 20?
My initial idea was adding these onto the DC of 20 for a masterwork weapon.
+5 to the DC for every +1 bonus applied for three and under
+10 dc for each bonus beyond 3 (maximum of 5)
+5 for giving such bonuses to a weapon made of a special material
Additional +5 if its adamantium
Whether anyone takes a crafting skill or I'd like to get this squared away.