Jira,
there are 2 things :
1) the lowering of the Danger Zone's penalties when hitting the ball at shoulder height, which depends only on the ball height ; the perfect range was 10 cm (ie: +/-5cm), and I raised it to 15 cm for the next update.
2) the extra speed when doing an acceleration at shoulder height, where many parameters come into play ; after careful checking, I found out that the raising speed of a big top spin ball was cancelling too much of that extra speed, so I tuned that down for the next update. There, observing match .dmo's could help me figure out if all cases are covered correctly or not. This extra speed also requires preparing your strike for at least 0.6 seconds to come into full effect.
3) A perfect Shoulder Height Accel can bring 28 km/h of extra speed, so if all the correct conditions are met on the base acceleration, it can reach ~180 km/h (with 100% Power skill). On rising topspin balls, it shouldn't happen, and being able to hit 140 km/h acceleration out of them seems to be already a decently realistic result.
