Reduced direct duration = less definition & more risk of odd unisons?

Am I reading this thread at the PianoWorld forum correctly and understanding what it means for our presets?

http://www.pianoworld.com/forum/ubbthre...tion?.html

Which would mean that reducing the Direct duration has the benefit of extending the decay of widely detuned unisons, but it reduces the definition of the pitches (by adding new, nearby pitches for all of the partials), encouraging what some people hear as a nasal tone? That seems to be borne out if I create a wide unison detuning, depress the damper pedal and play two nearby notes, letting them slowly decay, and then move the slider to the default position or just to the right of it and play the same two notes.

(If I remember correctly, Philippe once explained that reducing the DD modelled having the hammers hit one of the unison strings at a slightly oblique angle, which is what part of the thread discusses.)

Changes the way I'll approach unisons and the dd slider...