My tactics are mainly about wide men playing either as Inside Fowards (AMR/L) Wingers (MR/L, AMR/L) Wide Midfielders (MR/L) and if you buy the right players for the stated roles it tends to divert opposition to stop the wings where my main threat is which allows more space in the middle for my strikers to get on the ball. The best roles i find to get the players on the ball are Poachers, Deep Lying Fowards and Complete Fowards.
Poachers basically are very direct and either get a shot away or run direct towards goal.
Deep Lying Fowards tend to obviously come deep to allow them to get on the ball.
And Complete Fowards do the hole lot what strikers are ment to do. Score, Create, Play.
Make sure your roles are correct on strikers - check their attributes and try and get the role that gets as many 15+ ratings into their role.
Sorry if thats abit confussing.
Hope it helps!