Addition: starting a new church.
Reproduction: a new church starts a new church.
Multiplication: a new church starts a new church starts a new church.
Movement: when churches starting churches becomes the norm.
The size or shape of the new churches is unimportant. As long as they can multiply disciples and new churches, the job will get done.
I've heard it said that you can't tell how good a parent someone has been until they become a grandparent. Maybe we need to redefine "success" in church leadership in terms of the quality and number of our "grandchildren."