Thom Rainer features a post dealing with one of the reservations Christians have about additional church services or congregational growth.
It runs along the line of “We can’t add another service! We won’t know everyone.” or “We’re dividing the church?”

One of the observations about that which Rainer offers is:

There are often unarticulated and underlying meanings to these objections.
It is not uncommon to start a new service with a different worship style. Some of the objectors may not really be concerned as much with the additional service as the style of worship.

It’s a helpful observation to try to unpack whether the presenting concern is the actual concern.
Most Christians want more people to come to Jesus, not to put a size limit on the Kingdom.

There are more points at Rainer’s blog, along with some helpful observations in the comments.