I was apprehensive, but it is a good survey. Even if it focuses a lot on 5e implementation, it is fair enough. Hopefully a good mix of players will respond.
EDIT 1 : the question about "no for-of-war" was a bit confusing for me. I presume it refers to the fact your camera can look everywhere.
EDIT 2 : The "engage all" was a bit surprising also. Some enemies that are near do not engage at all, so the question seemed biased towards claiming all enemies attack, which is not true at all. In the goblin camp (ruined Selune Temple) for example, you only fight goblins that are in the close vicinity, which is not realistic, unless one hits the war drum.
1- I guess the main problem is the lack of immersion of getting the upper hand in sight as you can see things out of the line of sight of your characters.
2- I see the problem of the question as the system is a little chaotic as it is. Some fights you get that battle spreading to the whole city like in the goblin city and sometimes you can pick a spot fight even being near other foes. For this question you need to think of what would be more reasonably for you: fight all or fight some of the foes in the proximity