Unfortunately, you're mistaking "what Divinity 2 should have had" with a whole different game genre all together.
Everything suggested points to a sandbox game, where you can just fly around anywhere without any loading screens at all for no point other than being able to do so. D2 is not a sandbox game, and therefore does not have any sandbox elements that you say are "missing"
Companions wouldn't work with the story, either. You are MEANT to feel alone in the world, because you are THE LAST of your kind. Human companions and the like would not in any way shape or form be able to stand against the things you are going up against, and most probably wouldn't willingly join you, anyway.
Blocking, sure. I never understood why if I went sword/shield I had to rely on rolling around and did so just as easily as a ranger or assassin style character.
Ability to dye armor and facial customization? Again, that's for more open ended games and only really there so they can point and say, "see! We have all these things! Aren't we special?"
