I heard this is more like a Splinter Cell Conviction type than the traditional Plan and Execute thing. So I dont see how this can be less fast paced than Blood Money. I had Silent Assassin Ranking on all my missions on Blood Money and it took a hell of a lot more planning and time than any other game...
all it needs is Patience, this game requires you to learn your surroundings and the Targets movement to plan how to execute him without trail or witnesses.
if Someone looking for fast paced game just for the sake of going to the next stage, this aint the game for you