I've tried that way myself but I came to the conclusion that judging short balls was too challenging for me. You can set up for certain bowlers, for example those with Brute mentality, to expect more short bowling. Also, look to the field settings which will generally indicate a specific short ball plan. But, like
@Wahldo says, you begin to rely too much on premeditation. So, I went to the ball marker and gave short length a unique colour. It reduces the guess work but still keeps you on your toes.
It requires greater effort on your part to judge the line of the delivery and your shot selection. I had used just a pitch marker for a long time (since Ashes or Cricket 19) but I realised I began to find it unsatisfying. I personally don't think it's complicated to make the game challenging. All I change is the markers and the ball marker display time. There's no need to try and find the perfect set of numbers with sliders.
It also opens up the bowled and LBW far more than 'standard' settings, because if you have a pitch marker telling you it's straight then you can always block it. With more room for error on the line of the delivery it will lead to more mistakes. I get bowled or LBW quite often but I am quite wreckless.