The development team behind a towering mixed-use project proposed just north of the Country Club Plaza includes a couple of heavy hitters. NorthPoint Development is the apartment partner for the project, which calls for a 13-story, 168-unit apartment tower and a 10-story, 252-room hotel at 46th Street and Wornall Road. Plaza Hotels LLC, the special-purpose entity formed for the project, also involves GEM Holdings LLC, an asset management and investment company run by Greg Maday, one of five investors...