Delterius
Arcane
You might be under the impression that I'm badmouthing PoE to say good things about BG, this is not the case.
I'm not really addressing the illusion of attrition in itself (which can be very much real in either game if the player is willing), rather, the illusion that trash combat is significant in anyway.
In Pillars of Eternity, for every encounter in the game minus about 7, you'll be spamming per-encounters powers left and right. That's not much more significant than just auto-attacking enemies to death with bows in the Infinity Engine. Meaning that most of the trash in PoE is just filler content, something that the devs are wising up to in the coming patch.
Much like BG, you can use per-rest resources in these fights to end them sooner. It's encouraging the opposite behavior of what BG wanted to encourage.
You really don't need much help to 'end battles sooner', even with PotD's bloated enemy stats. What you just said is so radically irrelevant to the experience of either game that you just reminded me you haven't even played PoE yet...