Excellent points, I kind of wish they were all together in the same thread so it could form a massive sticky, but I just read through everything and its all nails on the head.
Also for verticality, in addition to everything mentioned above, as of the last patch my characters are constantly getting stuck when climbing down stuff. I noticed it in the prologue during the first imp fight, and again at the gates to the druids grove, and then just all over the place since They get caught, and then start wigging out and vibrating in place with audio on the fritz as well like hep hep hep. Selecting another PC frequently just causes more than one character to get stuck this way on a vertical transition, owing to chicken run syndrome. I've had 3 PCs at once all doing it. Reloading will snap em out of it, but that's a pretty big stall given the average load times.
Anyhow, great feedback. Hopefully its taken up