I feel the perk upgrade values are unbalanced.
Per upgrade a skull bonus perk increases by 0.1% that is reasnoble concidering how effective it is to avoid to big gaps and advantages.
But why does xp perk only increase by 0.1% per level as well? Its not really giving a big advantage in wars or raids. Luck increases by 0.2% and start morale by 0,7% just to mention.
I am level 97 and all my skull gear i got with a value between 2.1 - 2.7 in comparison xp perk values i gotten was between 15-18%. So it seems really strange why xp perk just get + 0,1% per level upgrade
Other values like increasing a HP perk also seems really useless. Theese upgrade values needs some more concideration