Ok so i was having a good chat about this with a friend.
The conversation between Vader and ObiWan on the DeathStar in StarWars needs to be changed.
Considering the exchange they gave each other at the end of Sith, Vader would have wanted revenge, he would have wanted it bad, his voice would have been filled with anger ,hate and vengance, he would have wanted Kenobi to suffer, he was just too calm.
What do yo think?