Here is my alternate season, but would like to make an observation about the 'Top 100 most performed operas of the previous year' - many of these operas receive many performances in different countries, but are not so frequently performed here in the U.S. (well, at least outside of New York). I've seen some of those I've included on my list in the last year, but had to travel to do so.
Korngold: Die Tote Stadt
Rossini: Semiramide
Taneyev: Oresteia
Rossini: Guillaume Tell
Massenet: Cendrillon
Bellini: Beatrice di Tenda
Mozart: Mitridate re di Ponto
Bellini: Il Pirata
Wagner: Rienzi
Puccini: La Fanciulla del West
Rossini: La Donna del Lago
Strauss: Capriccio
Verdi: Attila
Delibes: Lakme
Cimarosa: Il Matrimonio Segreto
Verdi: Giovanna d'Arco
Hindemith: Mathis der Maler
Korngold: Violanta
Verdi: Il Corsaro
Catalani: La Wally
Handel: Rinaldo
Strauss: Daphne
Puccini: Il Trittico (I realize Trittico's operas are on the list individually, but not performed as a unit)
Donizetti: Linda di Chamonix
Meyerbeer: L'Africaine
Some of the operas that aren't performed all that often in the U.S. include Lohengrin and Tannhäuser. I'm not sure Der Freischütz has been performed in the U.S. at all in decades.
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