I think we can and should promote that the Christian faith is a mosaic of denominations with different emphases.  Yes (I believe) there are branches/denominations within Christianity that are not orthodox - Biblically not in accordance to any denominational creed - and we must take great care to be aware of that; but we must advance ecumenical-ism. Without having this diversity we get a type of "Denomo-centrism" - akin to cultural ethnocentrism. 

Ethnocentrism does not deny that there is some sense of broad cultural truth (i.e.a society that values rape should always been considered out of the fold), but it also gives room for things to be expressed differently. For example, filial piety, a typically southeastern/eastern Asian quality of honoring ones parents - though more robust than that - seems in opposition to the friendship model that is found broadly in the American context. But both of these express loving ones parents. 

I would argue that many denominational differences are based as much on tradition as theology. Just as the rhythm and tradition of societies, overtly religious or not, create ideas and modes of thought, denominational tradition and culture form theological ideas and emphases Denomo-centrism does the same things as Ethno-centrism; it blinds us from the wisdom of another perspective. 

Societies (denominations) are beautiful things as long as we see them as apart of a human (Christian) mosaic that collectively represents a truth that is robust, powerful, magnificent and holy.