I'm not as knowledgeable as I should be about this so take this as such:
But, IMO, the folks that LIVE within the territorial boundaries of D.C. should NOT have their citizenship rights abridged in ANY manner!
That's first for me.
If they are at present in that position it needs fixed. Full stop.
However, it would be serious folly to award full Statehood to D.C. as is. It would be a completely unfair situation as compared to every other State.
D.C. should have appropriate proportional Representation in the House of Reps. (I think they already do! Like Guam, or Puerto Rico, etc) but NOT Senators.
HOW you affect that and still give full citizenship to the residents of D.C. I don't really know.
Above my pay grade, too.