Game Mechanics Crafted Weapons' Durability and Attack Speed

Please make it so that the amount of spells needed to lose 1 durability on a crafted weapon is independent from its attack speed. It makes no sense that fast weapons are better for spellcasting than slow weapons because they are more durable. Attack speed should be completely unrelated to spellcasting durability drain.

The current rates for durability drain on crafted weapons are 1 durability lost for:

• 9 spells on Slow weapons
• 12 spells on Normal weapons
• 15 spells on Fast weapons

Can't it just be 12 spells / 1 durability for crafted weapons of all attack speeds?

 

What about weapons all come out as normal instead of rolling for attack speed