I loved Attila, so far i played over 200 hours of it and finished 2 legendary campaigns, but one thing still puzzles me: The length of the Grand Campaign is so massive that I'm not sure if CA either wants us to spend 50~100 hours in every each one of them or if they want to experience the game and forget about beating it. I know this was even worse in Rome 2 but i barely played that game.
I feel a bit guilty about it, i was one of those who complained about the campaigns in Shogun 2 being too short(6-10 hours long), but now i kinda miss it...