So I've been thinking a bit, it's been well over a year since I made this thread. For curiosity's sake, I've wanted to compile what in this thread got addressed, and which ones have yet to be. Feel free to correct me too, as there are a few things I'm a bit iffy on.
...Threatened + Enemy Too Close disadvantage malus: Unsure
I believe this was bug-fixed in a patch. Threatened range shouldn't be applying disadvantage anymore. It's been a few months since I last played.