Shorter ferrules weigh less than longer ferrules and the decrease of weight at the end of the cue reduces deflection.
What all of you cue makers fail to realize is not all players want reduced deflection. Deflection, when understood is useful & your friend.
I use 1" linen based Micarta ferrules. Long, hard as a rock, heavy, big deflection & will never change. I love deflection, to each his own.