I definitely wasn't thinking of ripping the lines out, it's more of making use of them since they're already in the walls.
From what I can tell, they are not daisy-chained together, it looks like they ran a separate 4 conductor line from a terminal strip in the basement to each room
This sounds like a good possibility...
Good point, although we're hoping to stay here!
If the code and the comments disagree, then both are probably wrong. -- Norm Schryer