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