I had a guy in my League with that formation (it's not a team called Barsenal is it?)

Anyway a few seasons ago (I think it was around the time they introduced associated positions/different color exclamation points) that illegal formations seemed to disappear. If a GK is on the field instead of goal there is still 80/20 but it seems with other weird formations it is only a percentage drop per guy out of position... and since there isn't anyone out of position in that formation it doesn't get much penalty. And I think they now count DM as defence rather than forward, because I only got 60/40 against that formation you show.