I always liked seeing the DC license plates that had the slogan "Taxation without Representation" on them. That always made me smile and thought that was one small way to keep history alive.
The easiest way to clear things up regarding DC and representation is to just give the land back to Maryland. Everything that is federal can remain under federal control and the US Park Police or Capitol Police can be expanded to watch over the federal office buildings, White House, Cabinet office buildings, etc. The residential and commercial and industrial areas can go back to Maryland. Nothing will really change. Maryland is already controlled by Montgomery, Prince George's, Baltimore, and Arundel counties. DC is surrounded by Montgomery and PG counties. Maryland would add at least one or two more representatives, so the people would have their representation on the federal level. Eleanor Holmes Norton would be able to cast meaningful votes.
Jeremy