It looks fun to play, but the fight between AI entities looked pretty silly. Those three orcs fighting the troll before the main character goes into the overlord's chamber were just basically idling.
Still, my interest is piqued. I haven't played the first one (and probably won't unless it's free on PS+) but I might add this to the wishlist to buy when it drops in price.
Also, can you actually command your armies (or your warchiefs) to do stuff while in gameplay, or will they just keep "pushing forward"? I didn't notice anything like that in the video but when the guy in the warg jumped into the fight at the end I'm assuming that wasn't caused by the player, right? Seemed more like a scripted moment and I assume the AI character that plays support is randomly picked from the pool of available friendlies at the moment.