National group hired to sell naming rights as part of center's expansion plan. By Jeramey Jannene - Mar 1st, 2021 12:36 pm //end headline wrapper ?> Wisconsin Center expansion rendering. Rendering by Eppstein Uhen Architects and tvsdesign. Midwest Express Center. Midwest Airlines Center. Frontier Airlines Center. Delta Center. Wisconsin Center. The signage at Milwaukee’s convention center has changed plenty of times since the facility opened in 1998 to reflect a series of corporate sponsors and mergers, but since 2013 the building has operated without a sponsor. With a $420 million expansion on tap, the Wisconsin Center District (WCD) sees an opportunity for revenue on the horizon. The state-controlled entity has retained Denver-based Impression Sports & Entertainment to sell the expanded building’s naming rights.