Creative progression system combat wise?
What exactly do you mean by that? There is nothing creative about attribute and skill trees. D:OS1 was creative, but D:OS2 is 0815 or even worse. Summoner is the only skill with a level 10 'benefit' and even the highest tier of skills is learnable with only 3 points in, if I read correctly.
Everything in this game is focused in giving you more damage, not on creative ways but totally basic and linear. Classic mixed composition are pretty much killed by the armor system, because you can't really focus the same target without pretty much doubling the necessary.
Playing tank is no legit tactic, because AI will just ignore you, if you don't bait them with taking something like Glass cannon. Also the AI is pretty much always the same, just with a different costume and different skills. A zombie is as smart as a elite assassine.
