People keep saying Eusebio broke the ME with his tactic, but I'm yet to see good results with various teams (or any results at all).
The only results I've seen are his using Benfica.
It's not breaking the ME it's just exploiting the ME, you'll see a lot of crossed goals because of how powerful they are this year, the tactic will still need good morale and good players etc. for you to get the desired results