Warhammer, what happens if you want to play but your favourite DK buddy can't? What happens if your DK buddy sees progress in the story differently? what happens, if your DK buddy loses interest in the game and you dont?
You control the DK exactly as it is now, That's the whole point!
I know it is hard to imagine but some people actually play with their girlfriend / wife / roomie / collegue,... They wanna join the fun ? Let them grab control of the DK,... they'd rather go shopping ? grab control of the DK yourself.