Walter Miller's 4 syllables (2 + 2) hit the Hollywood sweet spot.
Walter's 2 beats vs. Miller's 2 create a natural cinematic snap.
Walter Miller's softer consonants cost it screen presence.
Walter Miller misses the alliteration hook that makes names stick.
Walter (6 letters) and Miller (6) are balanced in length — clean on any poster or marquee.
Walter Miller has mostly familiar phonemes with a few tricky patterns.
Walter Miller has decent vowel richness, but stronger A and O sounds would lift it.