Grace and peace to you all.
I spent the last 8 years of my childhood in a RM church. I went to an RM Bible college, and I was ordained in a Church of Christ as a minister of the gospel. I have spent quite a bit of time and energy studying the Church, its history and the various views of what it is.
I have come to believe that the NT Church was not what many RM folks imagine it was, and that it should not be restored.
RM folks usually freely confess that they are trying to restore the Church found in the NT, but they cannot defend this goal from the scriptures themselves. Most RM folks never ask themselves if this is something God wants us to do. They simply assume that, in the interest of purity and simplicity, this should be our goal.
The scriptures DO call us to "seek the ancient paths," but those paths do need lead to RM churches. The ancient paths lead us to a pattern of worship that God Himself established and means for us to follow, even in the NT.
Many RM leaders assume that we are in a better place to determine what apostolic churches looked like than people who lived in the first and second centuries. They have been taught (and continue to teach others) that the Church turned heretical and abandoned the true and simple gospel towards the end of the 1st century.
The Church understood itself as true Israel in the NT. They were very much connected with their roots and understood that God was not throwing out all that He had so carefully created in the OT.
Early Christian worship was a mixture of elements. Israel had always understood that God wanted things done in worship in a certain way. But there was worship in the sanctuary in Jerusalem, and there was worship in their local community. Temple worship was the true worship ordained by God, but local worship was also important.
The earliest NT worship continued to be at the temple in Jerusalem. But it underwent great transformation between AD 33 and 70. During this in-between-time, the Church was trained by the Holy Spirit to understand how the OT system was a copy and a shadow of the new. We can see this throughout the NT, especially in Galatians and Hebrews.
The Church in this period gradually began to realize that the patterns of OT worship were to be followed in the NT but with greater understanding of how Christ fulfilled the types and images. Thus the three-fold structure of sin offering, ascension offering, and fellowship offering became the essence of NT worship. Confession of sin and profession of our forgiveness in Christ, the lamb of God, had to be done BEFORE we could be cut up and arranged on the altar as an ascension offering. The ascension offering, the early church understood, symbolized the orderly ascension of the sacrificed believer into Christ and thus to God Himself. Only then could we eat the fellowship meal with God, after we recognized our standing in Christ as forgiven sinners and had the cutting edge of the Word applied to our lives. Having ascended into heaven as the ascension offering, we could have a fellowship meal with Him.
The Church revealed in the Book of Acts is not yet fully aware of how Christ changed the nature the worship. There certainly is NOT an abandoning of OT forms in the name of some kind of democratic and simplistic sentimentalism.
By the time the temple is destroyed in AD 70, the Church sees itself as the temple and offers spiritual sacrifices acceptable to God.
Looking to the Book of Acts to find a pattern for worship is like looking at a 4th grade textbook to figure out what WWII was like. It just isn't all there. And nothing in the scriptures themselves tell us to do exactly as they did. We should no more want to emulate them than we should pattern our adult lives after the practices of junior high kids.