The game is looking good.However there are a few things that in my opinion diminish a good experience.
First of all,I think the returning of serve is too OP,almost broken.In high levels while playing online players stand too close to the baseline,sometimes inside the baseline,almost inside the court.Why is that?Because counterpunching the serve(especially the second) is too easy,and makes the return of serve more easy to handle than the service games.Thats why we see many broken serves in high levels while playing online.In real life we dont see ATP players returning second serves inside the basiline.The online players do this because they want to get profit from this matter,wich I think is an issue.I think service games and returning should be more balanced.
Another topic is the slice.Before a couple of updates the slice felt good.It wasnt a handicap,and was still attackable at times.But the down the line slice had penetration and speed and accomplished a change of rythim,the same as the cross court slice.But now,the slice is 100% attackable from every position.Especially the down the line slice wich floats very slowly even in the fastest of grass courts.This issue can be seen even in warm ups,where the cpu can hit clean winner from both wings while I attempt to produce a deep slice.This is another topic that I think doesnt happen so much in real life tennis.We dont see very often players hit clean winner of a deep slice.In the game a 2hb player can hit a clean backhand winner from a deep cross court slice.
This is my take of things that I dont like in the game and I think if this topics could be tuned a bit the game will earn in realism a lot.This "issues" prevents the game to be a full simulator,and makes it an arcade in this aspects.Everything else is very well done and the game feels great.
Sorry for the long text

Hope for a reply
Greetings!