Hi Manu, I love the way the game is progressing. I'm really happy you added the option to invert the controls for the far side of the court!
I would like to make a couple other suggestions for gameplay, if possible.
1) Super Arcade mode. To have even fewer errors from lack of positioning. Sometimes I like to just play for a few minutes at a time and just hit the ball to rally, without worrying about errors and stoppages.
2) Footwork Boost/Minimizer selector for the CPU player. To be able to easily make the CPU player a little bit faster or slower, without having to change each player's individual speed setting.