A MULTI-SITE CHURCH?

Thinking about multi-site church (one church with many campuses) has always been an academic exercise for me. I figured I would have to come down somewhere at some point, talking to a fellow brother in ministry who might be considering this kind of church structure, or some situation like that, but that time wasn't now. Well, in the sovereignty of the Lord, that time is now. My church is considering multi-site.

My questions are these:

1. Is multi-site biblical? Is it required? commended in some circumstances? prohibited? Or do we have no biblical teaching to help us answer this question?
2. If there isn't explicit biblical teaching on this subject, are there qualities about God, the Gospel, or the church from which this model of church would skew or detract?
3. Is multi-site prudent? If it's not required/commended in Scripture, is it the best/wisest option of all those available?
4. What are the motives behind multi-site?
5. How involved should the congregation be in thinking through and making this decision?

THE MEANING OF 'HILASTERION' FROM "PIERCED FOR OUR TRANSGRESSIONS"

"As we have seen, God's wrath at human sin is prominent in Romans generally, central in the section that immediately precedes Romans 3:21-26, and absent from God's justified people in the section that immediately follows. It is by setting forth his Son as 'a sacrifice of atonement' that God has turned his wrath aside, leaving his people justified before him. That hilasterion here means 'propitiation' could hardly be clearer."