My take for the Washington Not-The-(Washington Football Team). I decided to call the team the Sentinels. A Sentinel is a soldier who keeps guard over a particular thing. The name works well for a football team (although maybe not if they have a bad Defense or an Offensive Line), and it gives the impression of a fortress or a defensive stronghold, such that should be implied by the capital of a country as prominent and powerful as the United States.
Logo (features a letter "W" with the dome of the US Capitol Building superimposed on it)
Uniforms (keeps the same general design as the old (Washington Football Team) uniforms, but adds a chevron on the sleeve to look like military insignia)
C&C Welcome and Appreciated.