I like the Campaign Design.
First, it tell the story very clearly and intense. I am immersed in the plot.
Secondly, every mission has different style. One is ARPG style, another one is Standard RTS style, another one is Stealth Style and so on. It makes a fresh feeling to each missions.
Thirdly, I like the design of rotation in DoW3. Like the faction rotation, the battlefield rotation (From ground to space ship and then from space ship to ground.) and the play-style rotation.
Thanks for reading.