Hi manu hoping you're doing great I wanted to share with you a feeling that at least the Pakete's Community (Dani21, Vaya, MarcoVZLA, Madferit, Johnmachete, and more) share about the slice shot.
The shot in itself in it's current state is unusable. Everytime you hit a slice on hard or grass is a free winner for the opponent if you don't guess to a side and still that's is a 50/50 chance. And I don't mean like the tap the button slice when you are in a defensive situation or in the stretch, that's normal that you hit a very attackable ball, I'm talking about the well prepared slice mid rally at any height below shoulder. We feel the slice lacks any purpose and use in it's current state, and since the last update got even worse, but imo before that it was already at a bad spot.
Like you can have your opponent in a crosscourt battle and hit a very sharp cross court shot and next shot you hit a slice prepared for a good time down the line and the opponent can just get there and hit an accel down the line back with full power and very good precision or a cross court short acceleration to the other side like it's nothing, using it is giving away the point or control of the point instantly, when irl pros use it to slow down a bit the point, or for example using it down the line to expect a cross shot next because ripping it back down the line would be very very high risk for the opponent in that situation (and it's not in te4 with decent skill). Idk if it's because the bounce is not low enough, or the ball floats more than it should or goes higher through the air, or the underspin is not affecting properly the aiming of the opponents shot in a way that's more risky aiming so close to the lines (aiming maybe could be more wide and short so if you rip it hard then yeah the ball will gain speed and spin so it won't go long necesarily but the directional control shouldn't allow you to hit the corners or line every single time at full speed with ease) but in it's current state is very bad and we all agree it needs tweaking, but in which way we're not sure since we don't understand the physics of the game like you do.
imo it just needs a revamp of how much underspin you can get at certain heights, like the slice works like it should only when you hit it like shoulder height or even higher and you hit the ball down with 100+ km/h and 85+rps after preparing for long, but why can't we get anything above +55 in a slice at medium height or low balls, even if we prepare it super early it's still doesn't "bite". Like you get 0 reward or tactical benefits for using it in a situation that you could've accelerated for example.
(Also a little love for the short slice would be appreciated too, it has too little underspin imo, so players even if they get to it when is very well placed can go cross fast or down the line above the heighst part of the net with no issue lol, never goes above 35/40 rps of underspin so maybe it could be around 55/60 max and +3/4 km/h faster imo)
I've read some old topics about the shot and for example Julianu always said even after all those changes done in the past, the shot was still underwhelming
I know I've asked a bit too much recently for gameplay adjustments but it's always for the better experience of the game, and in this case we've discussed this topic in our discord server and wanted to share it with you.