After watching the video there are few notes/concerns:

1. It seems like the quickbar where you have put your skills and magic does not show how much points takes this or that spell. If we have to open skills/magic menu to check it every time (and then add possible bonuses or penalties on top of that) - it will be an nightmare.

2. Item=throwing ability seems to be not based on player strength. Even a dexterity-based character can throw a barrel with oil as good as tank with tons of raw strength.

3. You can split up to do your own stuff but so far it is unknown how long this will work. Can I change location? Can I kill some bosses or wipe out the dungeon while another player doing the same or completely different things? Can I progress further on main quest or even finish the game alone with my henchmen and cunning tactical battle skills while second player grinding or reading some books? What the limitations?