The Echo giving the ability to pre-dodge has always been a hand wave type of thing to me as it isn't ever confirm/denied anywhere. It's an innocent headcanon at worst.

As for the "did we solo? Were we in a group?" I'm content with the reasoning given (in HW, I think?) that the answer to that is "are you? Aren't you? Who knows?" unless made obvious such as Prae or Hades in which you can see the other players as part of story-centric cinematic.

Other than that I don't have too many nitpicks aside from some inferences regarding the echo and adventurers not being likely to have it and lack of other warriors of light (though I know of only one explicitly named off the top of my head) Maybe I misunderstood though.