What improvements would make the biggest difference to frequent travelers? Let's get an express train to DIA with just a stop or two after Union Station. Let's get an alternate way to get people to the B and C Concourses if the train is out of service. Let's get faster security lines (maybe that's achieved with these renovations). Let's get more electrical outlets to use while waiting at gates. Let's get some play areas for kids in each of the concourses. How about doing things that actually matter to travelers?