I don't hate the idea, but presumably Kayal would have been sent off for swearing when Barton stamped on him. The refs will think they're being sworn at sometimes when the player was just swearing in general - we could see some farcical outcomes.
Why should it be just swearing at ref.....Obviously if someone hurt and shouts F..king shit refs, will or should use common sense..Personally I`m not keen on Fans swearing at Lino or ref but some will say all part of football.