I've recently noticed that the so called illegal formations are not affecting your possession and performances anymore. What I've seen so far were a few threads about 2 DC formation.
After coming home and checking my top eleven account,I was surprised to have drawn against a strikerless formation and also.had only 58% possession while playing home match.
We have 2 cases:2 defenders formation and strikerless formation. It only remained to check the the wingerless formation to make sure Nordeus has compleatly eliminated illegal formations.
And I think it is a good thing to do that,cause they give us free choice for every tactic and also this makes the game more realistic.