The Disney effect | The Broadway vs. Opera War
You mention the "Disney Effect"—the tendency for modern singers to sound like princesses (bright, straight tone, speech-level) rather than operatic heroines.
Disney taught a generation to sing "clean" and "pretty." Opera asks for "rich" and "complex." The Disney sound is a style that is designed for the microphone. The Opera sound is historic; it is designed for the acoustic spaces. Neither is "wrong," but they are different instruments. The mismatch is when you try to sing Verdi with a Princess Jasmine technique.
The Sovereign Solution:
1. Know Your Genre: Are you offering a cartoon or a jagged reality or a mix of both? Adjust your palette accordingly.
2. Add the Vibrato: The "Disney" sound often straightens the tone. Let the vibrato spin. It is the lifeblood of opera.
3. Darken the Color: Do not be afraid of the "Ugly" sounds—the chest voice, the growl. Life is not always fairy tale.