Jackson's strength is that he got the W's to buy into the system- play defense and rebound well. However, that defensive system was constructed by assistant coach Mike Malone. Then on the offensive side, he managed to make a talented W's squad with a gifted shooter rank near the bottom in offensive efficiency. Dude was terrible with XO's and his substitution patterns were absolutely maddening (gang substitutions only work when the next 5 men down can actually play). For all the beautiful ball movement during most of the first 3 quarters, the 4th quarter would often degenerate into post ups for D Lee (who is a pick and roll player not a low post threat). Finally, for a guy who preached to his team about no egos and playing for each other, he sure had a habit of alienating his own assistants that could've potentially covered for his deficiencies.
In saying all this, I like Jackson for the most part and appreciate how he got the players to buy in and play hard. But the W's have a talented roster and for the most part, they underachieved last year.