I must admit, I too felt there was a bit of a dissonance, between Wyll being the "Blade Of Frontiers" story-wise but not quite having the Dexterity for being a rapier duelist, as far as the mechanism of Ability Scores is concerned.
It's somewhat similar to Shadowheart being a Trickster-domain Cleric with the Urchin background, and having no Dexterity to go with the Stealth and Sleight Of Hand one would have expected her to be good at. I heard she was changed in Patch 3, to have Ability Scores more in agreement with her story though.
Shadowheart was improved, yes. Her new stats are alright.
That's a lot of odd numbers, which doesn't really get you anything. It would make more sense to just start with 16 DEX.
I kept to the standard array, as it seems companion characters are built with them. As Wyll is human, he, like Gale, will have quite a few odd numbers.
