I totally agree with the pathfinding issues.
Sometimes my characters will get stuck following my main because they can't deduce who to let climb up a ladder first because they are all equidistant to the ladder. That is fairly annoying and should be fixed.
Also, in some cases, the AI will choose a path that the AI knows about based on the map, but hasn't yet actually been explored by myself, so in order to catch up to my main, my followers will be set to run at supersonic speeds (which is funny to watch) except that sometimes they'll run through a game area that triggers a battle - unintentionally.
The "issue" you mentioned about the lady next to the arena in Fort Joy only breaking one necklace - that's the way its designed. She only breaks the necklace of the primary character or, "The One". You'll get an opportunity shortly after escaping the Fort to have all your necklaces removed.
I agree with you that chaining party members based on click-drag needs an additional option to reformat, like if I wanted to break up the entire party chain there should be a button that does that automatically without having to click and drag three portraits. I also agree with you on the inventory selling - being able to right-click to buy or sell would be fantastic.
Still, these are mostly "Quality of life" tweaks and by no means break the game. Still a 9/10 for me. Still doesn't beat the Baldur's Gate saga in my book, but is one of the only games worthy of mentioning in its genre that comes close to it.
