Despite his injuries in the last 2 seasons, I think we didn't get the most out of Sturridge and that's mostly down to Klopp having different tactics that didn't suit him.
Sturridge excelled under Rodgers because our midfielders were making runs behind the opposition defence which created space for Sturridge - in particular we used to see Henderson make quite a lot of these forward runs from midfield, off the ball.
But now we don't really see that from any our midfield at all.
Instead we our wide players are drifting in, and our full backs overlapping, and Firmino's role is to drop short to receive the ball with his back to goal - whereas Sturridge used to receive the ball facing goal.
Anyways, best of luck to him & Moreno - served the squad well.