Because a 17 is 1 asi from a +4 meaning they can now dip into a half feat for free essentially. Ir pick up one of the quest related asi boosts to get +4 without any feat use at all
While 16 is exactly 1 ASI from a +4 ... And as you get +1 to everything, you can set your secondary (no change here), tertiary, quaternary, and quinary ability scores to odd numbers, and get better results in general.
So ... nope, still not seeing the buff. O_o
I can understand there are certain builds that dont care about anything but single Score ... not sure if i would call them good builds, but that is matter of taste. And i totally understand that in theese VERY SPECIFIC cases, it may seem at first sight as better choice ...
But that hardly makes it straight forward pure buff.
You may say "yay i have my feat" ... and you indeed have it ... Over the cost of worse spell DC and worse saving throws ... or lower HP and worse Constitution saving throws, affecting both your concentration holding and your resistance against certain spells.
I can see this being matter of priorities ... But i just cant find the buff there. :-/
I still dont understand why cant we change Race for our hirelings. Lets us play Githyanki as racist as they trully are!