Pretty underwhelming as a whole, I mean I fucking love Warband's singleplayer so I will play the shit out of this regardless, but the improvement and polish is not as all-encompassing as I had hoped. Fixing the siege equipment and such is a no-brainer, and it would have been really silly if they would not have managed that. However, I also expected the AI to be significantly improved, but I am hard-pressed to notice any improvement. Mindless clumping, facehugging and rigid routes to the closest enemy, even if its gets them all stuck in a door while looking the other way. It's all still there and it is a huge eyesore, and also makes the gameplay more boring. Fighting animations do not look too great either, not sure if not worse than Warband's.
I get that they still have at least half a year of developing to do, but I am not sure if AI behaviour is one of those things that gets pushed to such a late phase. I do still have hope for a replacement of the old sounds, and that goddamn awful font.
There are things that look better than I expected though. All the animations on the new siege stuff looks good. The bouncing arrows and ballista bolts are cool, and the few turns he did on the horse looked really nice. Rocks that you can chuck down is fucking awesome, I hope that makes it into multiplayer.
Also curious how they find such a crappy player for an official gameplay demonstration, he does not help to make it look any better.