Old churches must not simply stand as monuments to the past but as spiritual grandparents that have invested in the future by passing on their life to others and releasing their offspring to form new congregations. Church planting needs to be given priority by old-line denominations.
In all my eleven years of itinerant ministry I cannot recall any growing church which does not encourage small groups
Christians can not truly evangelize unless they are prepared to be evangelized in the process. In sharing the good news, people are enriched by the spiritual insights, honest questions and depth of devotion demonstrated by those of other faiths. Including others involves listening to them, learning from them. Much of what exists in other faiths may not necessarily be hostile to the kingdom. Christians can learn a lot from other walks of life.
Probably after Vietnam and Watergate, there was an increasing distrust of institutions, so that Jesus was still in, but the institutional church was no longer an attraction. So, I think that the dropping of the denominational label is to become more generic, less of a threat, less of a reminder of negative stereotypes if you've walked away from church.
The twentieth century saw the emergence of a Churchless Mission and a Missionless Church
Emerging church leaders are not impressed by those who defend the Christian faith by promoting definitive answers to convince those who doubt the faith.