The Cort and the Longacre are not cursed. They are less popular theatres that usually get crap bookings. People like to blame the theatres for bad shows, but the theatre is only as good as the show inside of it.
I saw Ain't Misbehavin' and Children of a Lesser God at the Longacre, and Ma Rainey's Black Bottom, The Magic Show, Sarafina and The Heiress at the Cort. All wonderful evenings.
The Cort needs a marquee like the Walter Kerr, that would be visible from Seventh Avenue, but it's a lovely, good-sized theatre, that is equally suitable for plays and small musicals. The Longacre is pretty drab inside, with its baby poo brown interior. But a good renovation would certainly make it more desirable.
Yes, both theatres have unpopular second balconies. But the visibility is not bad up there in either theatre, and it's a virtue to sell the second balcony at a cheap price to fill it up.
The Nederlander was once considered the unluckiest house on Broadway. After 10 years of Rent, will it still be so when that show eventually closes?
Begin at the beginning and go on till you come to the end: then stop.