Love your comment overall but disagree with the final point. "The Body of Christ" is fully human -supposedly - in community. Human community absolutely needs some level of "institution", a code enshrined that has the consensus to uphold.  When the institutional dimension of community overides the objective of the community this is "institutionalism". 
"Institution" is where the preservation of evolving tradition finds its source; it is leadership and followship; it is the route through which emerging leadership is formed in its values and facts, certifies and is the forum within which evolution can take place.