Well, I think that the Javits Hotel plan is dead. But the site (with 1,248,138 square foot) is a good place for a tower (hotel and residential) like the original Chicago Fordham Tower (2000 ft tall with spire and 115 stories) with 920,000 square foot (a five-star hotel and 250 luxury condos).
Do you like the idea of more 1000-1200' towers with a single 2000 ft tower? About Hudson Railyard, I think that the Related's project is good for this site.