Sure, mutual respect is a prime value.

In my opinion, the key question is whether or not one can find within the history of liturgy internal principles, inherent guidelines, that can be used as a foundation for moving forward.

One prime example, IMHO, is the core of the what we now call the Liturgy of the Word. From the beginning in Jewish synagogue practice right on thru Trent, including all western and eastern rites, the pattern has been a set of two or three readings separated by psalmody. The purpose of the readings, in the synagogue or Tridentine ritual, has been to nurture our faith on scripture. For that purpose, that people might understand it, it was translated everywhere into the local language until the counter-intuitive concept of "sacred languages" took hold, pretty much universally. That the scripture be addressed to the people in their language is a guiding principle embedded our liturgical history. 

Internal principles is the only way to get beyond diverse taste.

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