@6balls there is definitely a need to optimize the ski for shorter line dynamics, if that is the goal. Skis that feel perfect at your first couple passes are usually not fully optimized for shortline geometry. Again, I think it should go back to a basic understanding of what the actual end goal is for shortline performance....a ski that allows you to effectively Stivot (steer/pivot the ski into a yaw or slip orientation into apex) without requiring an abundance of foot pressure input to make that happen, becomes a key factor in being able to maintain the optimal path into and out of apex, at shortline.
@AdamCord Great points! I apologize for the confusion on my original comment: I was assuming body position was already a given....."If you are not at least semi-proficient at smearing your ski on command (controlled skid without falling off the back of the ski)" i.e., if you "hammer a turn" as you pointed out, but lose position (fall off the back of the ski), then obviously 35 (and 38) are probably out of the question. To take it a step further, you are correct: if you do not first follow the rules of physics, and put your body in a stance and position to properly accept the forces through your feet and shoulders, then the rest is mute. That should be a fundamental assumption, as acceleration (development of speed, which results in angle cross course) is fully dependent on body position and force alignment/generation.
Assuming the above, the better a skier can Stivot (control and command the ski into various degrees of yaw/slip) the more consistent they will be at achieving and staying on an optimal path without excess slack, especially as the line gets shorter and the shape of the turn at apex is necessarily a tighter and tighter radius.
And yes, details do matter: quality control of all the initial starting parameters is key (ZO setting, good driving, ski/binding setup, etc...). AND, some of these parameters can be highly individualistic, so by all means, experiment and tweak until you fall into the settings you like (and until you find a driver that drives good enough that you don't notice them as a factor). BUT, once you find those initial starting parameters, lock them in, and try not to obsess about them. The additional improvements that can be gained by tweaking beyond that point, pale in comparison to the gains that can be made by focusing on fundamentals: technique/body mechanics, ski setup, mental and physical game.