The most apt name for that division would be the NorthSouth Division. But that would reflect the NHL's idiocy to a T and the NHL knows it, so it would never happen.
Haha I think I'm just going to start calling it the NorthSouth Division now.
Just call them the Eastern Division (there's already a Central after all), problem solved. I guess they didn't want to have an East without a West though, and they wanted an Atlantic/Pacific combo.
That would seem to make sense, but I guess they thought it would be confusing with an Eastern Division and an Eastern Conference, and you can easily just say first place in the "Atlantic" or "Metropolitan" and it is clear you are talking about first in their division, but if there was an Eastern Division, you'd have to always specify whether you're talking about the division or the conference.