Washington National airport built an entire new concourse to replace one miserable gate. Gate 35X was a bus gate that served 14 remote stands for 50 seat regional jets. The new regional concourse supports 14 large regional jets. There’s a gorgeous Admirals Club in that concourse, too.
The new concourse was part of the 10-figure “Project Journey” which moved security screening so that all of the concourses and “National Hall” would be airside. It turns out we didn’t need to wait two decades to eliminate ‘the worst gate in the country’.