Kansas City International Airport received a D+ on a new American City Business Journals report card that ranks 46 major U.S. airports based on the amenities, costs and conveniences that matter most to frequent travelers. ¶ But the fate of a nearly $1 billion plan for addressing 45-year-old KCI’s shortcomings rests in the hands of frequent voters, not frequent flyers.

That’s why Mayor Sly James decided to pull the plug in May on an effort to place the $964 million single-terminal modernization…