I would say an American Orthodoxy…that is to say an Orthodoxy with its own particular flavor is emerging….or perhaps I should say American Orthodoxies are emerging. America is big place and it has few old (for us) and distinctive regional cultures that are adapting in their own way. The Orthodox culture of Native Americans from Alaska is going to have some significant differences than the Orthodoxy one sees growing in the mainly convert hodgepodge of the South, which is also different from the emigrant built Orthodox communities of the North and along the largely Greek east and largely Russian west coasts.
As one other poster indicated, that converts look at all the variety of ethnic customs and celebrate the buffet. For example, the slava is gaining popularity among various Orthodox people I know, even if our priest is not entirely sold because it a Serbian custom that was just appropriated outside its native context. We all enjoy barbecue brisket as well as a nice big bowl of hummus with pita bread. We tend to prefer Russian/slavic tones for our church music over the Byzantine tones as a rule, and like the Russians/Slavs we don't need no "stinkin'" pews (the pun is intended).
Fr. Roman Braga, once said, given the nature of America, it's not likely we will have lots of the very holy, wonder workers, great elders, etc. like back in the old countries…but given our needs and our nature as a nation what we will have and in time excel in is spiritual hospitality, and giving. For all our faults as a nation, we are a generous people, and that will continue to grow and find expression in Orthodoxy as it roots here.
But all that said, most of what has been said is little more than expressions of aestheticism…the decorative accessorization of our own personal Orthodoxy…not a good mindset to get bogged down in, if you ask me.
What matters is that regardless of the ethnic, or newfangled convert hodgepodge of Orthodox custom adoption, we actually keep the faith. What matters is when nonOrthodox see us venerate the icons, light our candles, sing our hymns, and prostrate ourselves before the Holy Cross, and the Holy Gifts, they see in our midst the culture of faithfulness, of prayer, of humility, and reverent awe before our God. Through that they too will fall down, and whether they join us or not will confess, God dwells among them.
A few years ago at one of the feasts of the cross, one of the young people of our parish invited one of his Christian friends from his preconvert years to visit with us for a service. He had visited once or twice before. This time though he witnessed the whole parish prostrating before the elevated cross, wave, after wave of young and old, rich and poor, weak and strong, children and adults, people and priest, fall to their knees before the cross of Christ our God.
In that moment he was completely overcome, and quite unexpectedly began sobbing, literally falling to his knees unable to stand. He could not even speak; he just wept, and had to be led out to compose himself, and catch his breath. Nothing like that had ever happened to him before. And when he could speak all he could say was that it was just so beautiful…he could not explain.
I like slavas, I think well made hummus is delicious, and Znamenny chant is "off the hook", English services are great, and KJV sounding English is greater still, but all of that is window dressing next to a "Culture of Worship" that silences the heart, floods the eyes, and buckles the knees of those who through it are brought unexpectedly to beauty, to silence, to awe and wonder before our God.
It is that culture we must cultivate. It is the vitality of that culture among us which make all the rest matter or not.