The current Atlantic Division (the three New York area teams plus Philadelphia) would be melded together with four teams from the current Southeast Division (all but one of Washington, Carolina, Atlanta, Tampa Bay and Florida).Does anyone want to speculate on who the SED would lose? Well, since you asked, I will.
In terms of geographic rivalry, we can assume that Tampa and Florida will stay together, so they're safe. Washington and Carolina best fit in with the rest of this largely I-95-based Division. That leaves Atlanta. Geographically, they could be forced into a division with fellow southern relative newcomers Nashville, which would make sense in that Detroit (who is in the Eastern time zone and has the first right of refusal to switch conferences) could then move to the Eastern Conference and join Pittsburgh in the East's new seven-team Division.
Of course, the Pittsburgh situation will greatly impact any realignment plan (and if they move to Kansas City, they'll be the team going from the Eastern to the Western Conference and Philly would likely move to the Northeast, making room for Atlanta to stay in the Atlantic), but it would be great from a Caps fan's perspective to be reunited in a division with Jersey, the New York teams and possibly Philly, while keeping Tampa and Carolina. What do you think?