Phyllis Allen's 4 syllables (2 + 2) hit the Hollywood sweet spot.
Phyllis's 2 beats vs. Allen's 2 create a natural cinematic snap.
Phyllis Allen's softer consonants cost it screen presence.
Phyllis Allen misses the alliteration hook that makes names stick.
Phyllis (7 letters) and Allen (5) are balanced in length — clean on any poster or marquee.
Phyllis Allen has mostly familiar phonemes with a few tricky patterns.
Phyllis Allen has decent vowel richness, but stronger A and O sounds would lift it.