Dolly, during the early church, different areas had different customs locally, and of course in the context of the entire Catholic church and its rites that is true to this day. The early church was not unified in liturgically, and from what I have read, there is no evidence that communion in the hand was widespread over the entire early church. The council pretianed to the entire church, but again, there were local customs in the various diocese at the time to reflect the differences in the Greek and Latin cultures.
In any event, the biggesr question is why return to the liturgy of the early church? What did they do better, because looking though history, the early church suffered greatly from mass heresies that tore it apart. The liturgy changed slowly from the early church for reasons, to reflect greater thological understanding of the Eucharist and to combat heresies.
By the way, to Crusader, Vatican II said nothing about vestments, and some priests who celebrate only the NO missal use old style vestments.