I was thinking that if they were a bit smaller in diameter, there may be more goals. Didn't think that would effect the entire pitch geometry, but I suppose it would.
I follow ice hockey mostly, and the NHL doesn't see changes to the game as "meddling with the fiber of the sport".
MLB baseball, on the other hand, is overly cautious to make any changes. Perhaps that's a similar stance for the beautiful game.
I suppose eliminating VAR should be the first order of business?