I'm pretty pleased about what is going to transfer across, at least based on that video. It seems like practically everything I assumed they'd let you bring across, they are.
I don't have a single issue with them making a "canon" decision in regards to Henselt/Stennis, and I personally believe they'll just go down the route of them both being dead. Even if you chose not to kill Henselt/Stennis in TW2, ultimately there's 6 months between 2 > 3, and a lot can happen in 6 months. They could have both been assassinated, or died in the early battle/s when the invasion began. So both of them being dead seems like the safe bet, and I really don't see how anyone could be upset by that. The Witcher isn't Mass Effect (And not even Mass Effect pulled off what it stated it was trying to do), and having Henselt and/or Stennis alive/dead would just add way too many large scale variables and complications.
Nothing there directly about Ves, but I assume if we see Roche it'll mean closure on Ves's situation (We don't even need to see her, just a couple lines of dialogue from Roche would be enough to confirm the matter of a possible swollen belly). Otherwise it seems like they've ticked all the minor, but still very interesting boxes.
However first I'm importing a Iorveth playthrough, and now I have to make the utterly heart-wrenching decision, and the only one I'm truly troubled by, of whether to Save Triss, or Free Saskia, especially now that I know both choices could lead to something in The Witcher 3. I know which way I should go, based on what Geralt would do, but fucking oath I'm still torn.