1- It's a roll adjusted by class/skill modifiers. It's actually pretty fucking great.
2- Fine tuning and all that. While combat balance will come over time, that's just ANOTHER reason I'd prefer a six-men party: getting more chances to inject your actions in the action queue AND giving the enemies more targets would reduce the focus on your squishy characters.
3- The AI *does* have a vague tendency to "metagame" the combat on some specific behavior, but your complaint is weird, because "the movement range, of all things, seems like something perfectly legitimate for the AI to know about.
4- Official rules.
5- Party control out of combat is absolute garbage tier. Preaching to the choir here. See my signature for more details on this specific topic.
6- Yeah, an Incomplete, unpolished game seems to be incomplete and unpolished, unsurprisingly. Also, bugs and technical issues everywhere.
