What was the NFL thinking.....?

with its last division realignment a few years ago? first of all: if they wanted to be geographically correct then in the NFC dallas and carolina should switch divisions and in the AFC miami should go to the south, indianapolis to the north and baltimore to the east. but if they wanted to preserve the rivalries then tennessee should've stayed in the AFC central/north and baltimore should've moved to the south. what are your thoughts on this?