Churches, in general, tend to become a tyrannical echo chamber. That's my biggest fear about it.
Secondly, churches are easily infiltrated and manipulated by a political ideologue of one variety or another. Otherwise, I'm perfectly fine with it.
Your blog post is doctrinally sound, I think. Well-written!
Unfortunately you're right because men are sinful. They always seek power over each other and over God. The church often becomes a twisted abomination of what God commanded it to be.