Bring that Skyway from Riverside Av to Roselle, and from Roselle make a sharp left coming in with one line on each side of the auditorium, second floor. Below that running crosswise under the Skyway, you create another
Rosa Parks, with streetcar pre installed. Lastly, revamp the diagonal sidewalk in Riverside Park, to accommodate pedestrian and bike traffic, brand it with a name like "Paseo Grande" (Grand Walk).
Inside the building, you do exactly as the others have suggested. Take the auditorium as a fantastic pup and theater. The rest of the building gets built out as TOD shops, art studios, craft and other unusual microbusinesses.
POOF, when the trains, buses and streetcars arrive the place would take off like Moody's Goose!
OCKLAWAHA