It's not open yet, but there's a Philly cheesesteak place opening on 3rd Ave. between 12th and 13th (right next to Blue 9 Burger).
The sign's up, and the place is called 99 Miles to Philly. It promises "old style cheesesteaks." Looking forward to giving them a shot. Between this place, Blue 9 and Roll Roaster, the stretch of 3rd Ave. just below 14th St. is becoming a real grease paradise.