to retire if he continues going down this road because the more he cant turn things around, the more his legacy is getting destroyed. And I dont see any urgency on the part of Fed to turn this thing around. He wont go out and get himself a coach, he wont improve on his BH for when he has to play Nadal. He wont mix things up and put pressure on his opponent and attack the net etc instead hes glued to the baseline.
If you were to ask me just 2 years ago Fed would be in the situation he is at now I would have called u a liar. He should have had the slam record long ago considering the way he was going. Now its questionable if he can even grab two more slams.