He is more of compelled to adjust his game. He cannot just stick to his old game like we have seen before in the old KD. He needs to tone down his physical plays and quick drives. It would either be this or he will strain himself again and again and probably live the rest of his NBA life as an on-and-off man on the court. The guy is a good shooter anyway so he remains more of an asset rather than a liability to the team.
He can do that of course but eventually he will be back on his old self, PG had serious injury, starts to just focus on jump shooting by later in the last last season, we've seen him drive the ball and even had some good dunks, slowly he will get his confidence back again.
PG is a good testament that players can really came back from their worst injury, and be their old self. We have seen this last year wherein he put up MVP caliber statistics heading to the playoffs and had dunks that we couldn't imagine that he can pull off after that injury.
Durant is no doubt a good percentage shooter, if the management will tell him to just shot and don't defend hard, he will do that, life would be easier for him in that matter but I'm afraid he will be abuse by his opponent especially if he will start Lebron which we know a very strong and physical player.
Durant is a good defensive player in my opinion, I don't think he can simply abandon it and abuse by others. I'm sure he will rely on outside shooting first when he goes back and slowly but up good numbers including rebounds and block shots.