The other shoe dropped at the Metropolitan Opera last week, with James Levine now officially out (effective next month) as music director. At the moment, nothing is much different, with the only lineup change a year from now in the new Carsen Rosenkavalier, now to be conducted by the prolific TBA.
The change will come when a new man takes up the post. We approach the tenth anniversary of Peter Gelb's sole management of the house, and with the press alternately cheerleading and distracted by side issues and Levine hampered first by his Boston work and later by his much-discussed health problems, Met offerings have more and more reflected Gelb's and only Gelb's idea of the art. The general aesthetic stagnation has characterized most of the latter half of Gelb's tenure. (2013's Parsifal and Falstaff were stupendous exceptions... there has also been some glorious singing, but most of it's been by those Gelb did not himself prefer.)
Whether or not the new music director will have the experience or weight to much affect the course of the institution right away, his institutional presence and likely longevity in the post make it probable that this will be the single most important decision of the Gelb era. The most characteristic choice would have been Fabio Luisi - skilled, European, and interpretively chilly - but fortunately that's much less likely now. To me, the wonder is that the current obvious choice would be a good one: young French-Canadian conductor Yannick Nézet-Séguin, who debuted here as the best part of the Eyre Carmen in 2009 and took over at the Philadelphia Orchestra in 2012. Though his operatic repertoire is still limited, each of his Met runs has been electric, balancing a natural sense of the larger-scale shape with the dramatic urgency and fire too often missing in the house. He's also - and it seems to matter as far as getting the job - young, engaging, and easily marketable. Philadelphia offered an optimistic-sounding statement that didn't exactly answer the question (as indeed they couldn't).
I have, of course, heard complaints about Nezet-Seguin's imprecise technical stick work, which may be why we see a name like Gianandrea Noseda, a former Gergiev protege, also prominent in the rumor mill. Noseda wouldn't be a terrible choice for the same reason that he wouldn't be a particularly good choice: although he's proficient and certainly has been exciting at times, he's still a little musically faceless. If we're to look at recent guest conductors besides Yannick, Nicola Luisotti (currently at SFO) and Daniele Gatti (about to take over at the Concertgebouw) made much stronger impressions in recent years.