The urban designer for Lawrence’s proposed downtown shopping redevelopment urged downtown business people not to “lose the momentum” the project had built up. “I hope you can get together and move on this project and move now,” said John Stainback of the architectural firm Daniel, Mann, Johnson, Mendenhall and Associates. DMJM was working with Sizeler Realty of New Orleans, the city’s developer of record, which had two proposals being considered.