What's the difference?

I have a number of friends who recently have opted out of congregating in a place we usually call 'church'. Like so many of what are termed 'emerging church', they want to connect with God without all the religiosity and system of 'doing church'. A couple of days ago I heard of one such couple who had invited another similar couple to Sunday lunch and as they were talking it was suggested that they start a 'house church' and that one of them could be the leader. It seems to me that they haven't left church at all. They are simply doing the same thing in a house instead of a specific building we call a church. Meeting together is good and necessary - we are told by Paul not to stop meeting together. But to call that meeting 'church' even if it is in a house and to appoint someone as a leader doesn't seem to me to be any different from what they have left except it may be smaller in numbers. I feel the enemy is so clever at making us think that we are planting a new kind of church but so soon we fall back into the old system of doing things. When God says He is going to do a 'new thing', that means 'not like anything we have known before'.