When it comes to goalkeepers beimg good with their feet, Ederson is in a world of his own, he's an absolute freak.
Truth be told, He's irreplaceable when it comes to his footwork, no matter what keeper we sign after Ederson it's always going to be a downgrade when it comes to a ball playing goalkeeper.
We'd have the same issue with James Trafford if he was to take over as No.1 after Ederson in my opinion, we'll need to sign another goalkeeper anyway once Ederson does leave so we may as well sign the best shot stopper in the world of he's available. I understand your points though.