Hm, not being able to see the opponent's formation prior to the match would, at the very least, make a lot more managers watch their games. Really interesting suggestion.

But what should happen when you open up the match? Normally as it stands right now you can't make any changes to the Squad before the first whistle blows.

Maybe the limitation should drop and perhaps the time before the match stars, should be increased in order to compensate for the lack of information and give both teams some time to do quick prep-work before the referee signals for the start?