Exactly my thoughts, the 3-1 defeat he suffered on the third day of the season may have prompted him to improve his squad. His game philosophy is like Morinho, he packs like two buses and waits for the counter.
And I usually look at what other teams are doing, especially those teams with players on the leaderboard, but at times its like the more you look the less you see. Besides some managers never change their formation all season and they have trophies- I wonder how they do that!?