Maurice Costello's 5 syllables (2 + 3) hit the Hollywood sweet spot.
Maurice's 2 beats vs. Costello's 3 create a natural cinematic snap.
Maurice Costello's softer consonants cost it screen presence.
Maurice Costello misses the alliteration hook that makes names stick.
Maurice (7 letters) and Costello (8) are balanced in length — clean on any poster or marquee.
Maurice Costello has mostly familiar phonemes with a few tricky patterns.
Maurice Costello has decent vowel richness, but stronger A and O sounds would lift it.