Tbf, the service has been pretty mediocre to begin with. More than the players, the problem is with how the team has been setup over the past couple of seasons. With no true wingers, the build-up play was setup around the attacking midfielders. In that kind of setup the striker is just another cog, rather than an outlet for goals. Now, at least we have true wingers like Schurrle and Salah. Definitely a step forward to resolving the "service" problem, IMO