I disagree with repositioning the GK during corners. They are already good enough, even better with Raya and other GKs on Cross Claimer+ awarding them higher aggressiveness and power to punch the ball away from danger. I had corner kicks before in 26 and pre and all of them were caught by the GKs being placed in the dead center of box. CBs with Aerial Fortress + is now a necessity to defend corners as a solution to your issue.
Not every goalkeeper has the Cross Claimer+ Playstyle, so why should we rely on a specific trait just to handle crosses?
Furthermore, if you try to move the goalkeeper even by just a single centimeter, the ball goes in about 75% of the time. And if you face an opponent who has Virgil van Dijk and knows how to direct the header toward the goal, it's a guaranteed goal every single time
