Does the "Key Attribute" actually do anything for a Dragonbane Profession? It isn't called out at the beginning of the section; it isn't even mentioned outside of the individual profession descriptions themselves.
Obviously, there's the rules' mechanical aspect of "Fighters with higher strength are more fight-y" and "mages with more Willpower can cast more spells." But outside of that....
Was this initially something akin to what D&D's "prime requisite" used to do, in granting bonuses to earned experience points for higher values?
Call me a fan of Chekhov's gun, but it just seems like if you're going to call a Key Attribute out for each profession, there should either be some mention of why it's there, (even as a 'signpost,'--HEY PUT YOUR HIGHEST NUMBER HERE!), some sort of extra benefit to it aside from what's already baked into the ruleset for everyone else (as a Prerequisite, for instance), or not bother putting it into each profession description to begin with.
The rules are already lean-n'-mean, and it just seems like a wee bit of 'fat' was left, in this attribution-with-no-explanation.