I made a map but its not to change the meta or anything too much, just to improve the gameplay a bit of 4v4 3def.
Goal size and pitch height both bigger by 4 pixels, but kept the post-corner distance the same, which makes bussing harder, and a tad more space in midfield battles cus the wall floor and ceiling are more spread out.
Then the biggest difference was adding 40pixels of width to the pitch, which should make midfield battles last longer, and also the positioning of the GK/ST will probably be slightly more spread out in midfield (if they don't then they might be chasing the ball more, but naturally it would make sense to stand further back to catch clearances). Teams will have more space when they have the ball in midfield before they would get pressed too, or space behind the opponents if they do get pressed high and manage to play it through them.
So skilled guys like Yannex and Reus would probably dominate more in the midfield (which makes skills have more impact to the game than they do atm), and most likely more midfield goals through skills or passing combos which makes better promo clips and the game have more tactical/skill depth with midfield play being more significant to the game like real football.
I don't know how it would affect counter-attacks tbh, probably harder. If theres a 3v2 or 2v1 it would still be possible, but just take more skill and good passing/decision making to create a goal from a counter-attack since the opponents goal is further away. I think thats good because now counter-attacking doesn't become a cheap goal tactic anymore thats looked down upon, it would be a tactic thats not so easy to pull off but still possible, so there would be more levels to how well different teams counter-attack.
Here's map:
http://haxmaps.com/map/7783