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