The solution, to some extent, is to annex some of the beltway into DC. That makes more sense than grouping rural Virginia with the beltway. The same should be done with Maryland. This would create a larger more significant DC that would have to be competed against politically, but would also free up two states for more representative government.
Yes!
Virginia should cede Fairfax, Arlington and Alexandria to DC or Maryland.
Problem solved. VA deep red again.