Vivien Leigh's 3 syllables (2 + 1) hit the Hollywood sweet spot.
Vivien's 2 beats vs. Leigh's 1 create a natural cinematic snap.
Vivien Leigh's softer consonants cost it screen presence.
Vivien Leigh misses the alliteration hook that makes names stick.
Vivien (6 letters) and Leigh (5) are balanced in length — clean on any poster or marquee.
Vivien Leigh has mostly familiar phonemes with a few tricky patterns.
Vivien Leigh has decent vowel richness, but stronger A and O sounds would lift it.