Ethos said
"Unity is a recurring scriptural mandate and a lack thereof can be greatly distributed to the varying denominations and sects in Christendom"
This is just repeating the totally incorrect impression that the Watchtower paints of 'Christendom' and is certainly not based on any actual research, investigation or accurate information. They make sweeping statements about the different denominations which create the image of a constantly squabbling group of different churches at loggerheads with each other because of their differing interpretations which they jealously guard in isolation from each other for fear of contamination. They base these statements on historical origins of some denominations with their schisms from another but totally fail to consider hundreds of years of dialogue and reconciliation which have brought about the state of love and unity that Londo describes. Many JWs, certainly in the UK, think that Henry VIII is responsible for the Protestant Reformation!
As is usual, unity is confused by uniformity. And the assumption is that unity cannot exist while different interpretations and traditions are tolerated.