Somehow this gives me goblin vibes. Which… like totally works, but as Lariska… hm one’d have to get used to that.
Might be mainly the head, though because of the large “ears” (it is absolutely a good head otherwise, though).
Build-wise, as you say, it’s simple. Personally I’m not a fan of CCBS and tires on a G1 character, but it certainly works for the look - and your arguments for sturdyness and poseability certainly also make sense. I do imagine her with a little more bulk, though. This feels a slight bit too spindly to me personally.
As to a head design…