Most top players can place 95% of their kick serves into the 3 quatrants on the opponent's service box. They can choose whichever, depending on the return strengths and weaknesses of the opponents. I'll have to qualify that, the top players who CARE to serve well. Some don't, and spend the time on conditioning and groundie practice.
Lots of long tall guys can handle wide twists and kicks, and lots of short stocky guys can handle body shots with aplomb.
But very few returners can handle both.
Once you spot the weakness, you can hold it in your mind and use it on a critical point.
And serving within 3' of the service line, IN every time, is a simple 4.5 level trait.