Written over 400 years ago, Cherubini’s MEDEA finally made it to the Met on the season’s opening night, in a new production by David McVicar. Was it worth the wait? If you take it for Sondra Radvanovsky’s performance in the title role, a chilling, a Herculean task, it earns an unqualified yes. She’s not afraid to rant and rave, or emit ugly sounds to show off her anger.