As 1watchman implied... a lot of Churches, maybe even most, have a liturgical structure, even if it is not recognized as such, when they go through the same basic things each week. e.g. A prayer, singing, testimonies, a word, announcements, and a prayer to close or variations on the theme.
The thing to watch out for is... what happens if the Lord interrupts or... perhaps more importantly... can the Lord interrupt? Can the Holy Spirit step into the midst and blow away any preconcieved ideas of what should be happening or how things should be done to meet and touch people in a way that is going to change them into what God has for His Church? Periodically, in diverse places, this is what happens. Some might call it a revival.
Liturgy can, for some, become a really meaningful way to come to worship and God can often speak through elements within that service. The other side of the coin is that it can also be a way for people to opt out of meeting with the Lord and just feel ok about themselves. After all, they have gone to church, they've sat through the pomp and ceremony bit so now they must be considered righteous... or something like that. It sort of comes down to where people are in they're relationship with God, I expect.