Yeah strats would help. I know from experiance that having a designated leader for matches and strategies that you practice can be the difference between just winning and a total shutout.
In my first clan Team Canada, I brought in strats from NiP (Ninjas in Pajamas, later named sK| Schroet Kommandos). We went from winning against teams, to complete shutouts twice.
Also, strats don't have to be a laid out plan of attack as a lot of people think. Simple things like positioning people where to fire from or nade timing can make a big difference.