The Captain is a great player who is amazing when he is healthy, but at this late in his career, its easy for him to get nagging injuries, ones that do not keep him from playing, but keep him from playing his best self.
This is to be expected as people are looking at this as the twilight of his career, and his game is not going to regress as most of his production is based on high IQ play, and that can be kept up even at a ripe age. It's the beatings, thrashings, and bruises that will hold him back. He is quite the warrior and will always be able to play through a high threshold of pain, but his best traits are being able to impart knowledge to the young guys!
Listen to the young guys who play with him talk about how good he is at passing on tips and tricks, little wisdoms that make great players greater. He seems to have a good way of putting into words what a lot of players of his caliber often fail at. Lots of the elite players just do what they do, they do not know how to break it down and explain the logistics and cheats, he seems to excel at that and the young ones love hearing him talk shop. He will make a great coach if he ever wants to go in that direction.