I'm not sure I agree with that assessment. When the Belasco had tenants like Denzel Washington in Julius Caesar, Stanley Tucci and Edie Falco in Frankie and Johnny, Janet McTeer in A Doll's House, Ralph Fiennes in Hamlet, or Joe Turner's Come and Gone, post-Obama's visit, no one had any trouble finding that theatre. In recent years, it had two distinguished, though commercially unsuccessful shows with Journey's End and Passing Strange, as well as the Tony-winning revival of Awake and Sing! from Lincoln Center. I expect it to be the most beautiful playhouse in town, post renovation. If it were available this spring, it would be booked in a heartbeat.
These days, Broadway needs all of its 40 Broadway theatres - even the catastrophic ones, like the Marquis, Minskoff and Gershwin.
Begin at the beginning and go on till you come to the end: then stop.