Save import VS Legacy, unmentioned details have impact? totally ignored? mess up?

[Ildun]

I'm curious, for those who completed the game, is there any different between save import and legacy?

 

I started the game and completed it with legacy because I can't remember some of my choices, but I'm sure the dev didn't put a lot of option in legacy. For example the eyeless, there is no tempered or non tempered variation. Of course the result is, Abydon do not mentioned much about it.  And I think there is no eyeless hunting you, they totally ignore that possibility, if not there is no keep for Eothas to destroy 

 

Throughout the whole game, even some of the mentioned choice in legacy have very insignificant impact. Since they only put POE1 symbol in dialogue, I can't remember or understand why the result is like that, this make the impacts even more insignificant 

 

These make me wonder, is all unmentioned details being totally ignored? And I heard some players who started with save import having bug. There is no point to start with save import?