Although the Eastern Orthodox Church claims to have changed little since the Pentecost, the plain fact is that each Eastern church exhibits a mixture of Divine elements of worship with elements created by local customs, language, etc. What's important is that they all share the same Liturgy -- which has changed only in length but not in essence -- since the 4th century AD.
Understood. We have an almost infinite variety of manner in the Anglican church, even in the 1928 BCP churches -- and even in our church we have to harmonize practices with new servers...