Most orgainizations that call themseleves churches are really minitries of the church or a parachurch
They do good work:
In many cases the church's essential nature, activity and mission are obscured by concerns that are better left to parachurch organizations
Parachurch (stand along side) are good from accomplishing tasks efficently
Small house churches are still the most pure and simply the essential church
Smaller house churches will most of the time be closer to the ideal church the first century Christians lived
Parachurches cannot facilitate the intimacy, friendship and deep community a small church can
Parachurches tend to treat small groups minitries as adjunct to the larger church
The reversal of this thinking - house churches first and then periodically meet together to encourge a larger group, would be ideal
Given this is unlikely in the near term, plan to treat parachurch are they are right now, good for organization of events