Of all the things that will/could/might change, HP bloat won't be one of them.
Why? Because the game would be too easy without it. To fix it being too easy, they would have to change more than they would be willing to change. And frankly, I'm glad they won't. I've played all those games that you mentioned at the beginning, and BG 3 has better combat than all of them. We'll see where this game stacks up with the full release, but of combat I have no doubts.
