discounting your lye liquid may enable you to unmold your soaps sooner as in the case of a softer soap like a castille. because less liquid is evaporating from each bar there is less shrinkage weight wise per bar. i'm on the fence as to whether or not cure time is less. i still wait at least 6 weeks. i'm a believer they only get better with time.
some fragrance's do not play well with large water discounts, and will rice or seize.
i find too that if i do a discount that is steeper then 2x my lye amount, i get more ash, others don't have that problem, ( but then i don't gell either, at least not on purpose)
barb