The restaurants at the Time-Warner Center were conceived as a kind of dining Valhalla: a food court of the Gods, with prices to match. But now Per Se, Masa, Café Gray, and Porter House New York are getting a downscale casual neighbor with Landmarc, which opens today. Of course, it isn’t quite accurate to cast Landmarc’s arrival as a snobs-vs.-slobs sitcom; Landmarc is both well-liked and well-respected for chef Marc Murphy’s eclectic, hearty, well-executed American dishes. And both the wine and dessert programs were always a big hit downtown. Will that translate to filling the 300 seats of the new place? Hard to say. But it won’t be for lack of accessibility: the new Landmarc will be open from 7 am to 2 am every day, and will be delivering as well. We’d like to see you get that from Per Se.