Leather Proficiency Lack Explain

[gabrielgomesdesa]

Hey everyone! I was looking for my skills(passive) and didnt get one thing(cause probably lack explanation): What does change when you get more levels on Leather Mastery Dexterity(same as plate and cloth)?

Thanks for attention.

PS: Sorry about some bad english.

[Ferth]

I am wondering this as well. I know attributes can reach a cap, but the descriptions for many attributes don’t explain well enough what changes every time you purchase a new rank.