I know this discussed many times but i really think there should be something regarding to Passing shots or Running shots. Being able to hit a good passing shot is very important and a talent for me.
I find running shots are lacking precision goes mid service line most of the time. I think there can be a talent like 'Passer' which boost presion, players ability to hit more precise shots while running or both more precise and bit speed boost on their shots. It could be against player coming into the net or only related to running shots.
My other suggestion which i definitely consider is a talent is being able to hit good running shots from 2 m behind the baseline so hitting far from the baseline. In the game i don't think you can hit good shot precise and powerfull enough from so back like some players can do IRL.
There are 5 serve talents and i find many of them unneccessary. I don't think being able to hit a slice or top spin serve is a talent. Isn't every player can hit these kind of serves whenever they want? Also clutch serve.