Peter, do you mean that the Orthodox say no jurisdiction or bishop can change the universal Orthodox custom on clerical marriage, even though it's not doctrine? I like that approach to customs; celibacy's not a hill I'd die on as I like to say. But we hold the church can make those rules.
ialmisry, of course I know that's what Orthodoxy believes, so it's tactless or ignorant for one of us to breeze into one of your churches and say let's have intercommunion right now. That said, a perennial story in online Catholic/Orthodox fora is for a Catholic to come bounding in like a playful puppy, writing how much he loves Orthodox liturgy, theology, icons, etc., and how much we have in common, only to have the resident Orthodox kick him in the teeth ("Graceless heretic!" etc.). Granted, Catholics are allowed to believe that non-Catholics are going to hell (thank God we don't have to, and after all, we're allowed to venerate your post-schism saints, so there you go), but the difference is striking. Your churchmen hate the Catholic Church. We don't hate the Orthodox churches.
Loving "Byzantium" is Catholic. (Granted, a lot of us haven't lived up to that, but it's our teaching.) The church includes Byzantium.
The Orthodox seem rather to worship Byzantium. The church IS Byzantium; everything else is an unknown: could be schismatic, could be graceless heretics, etc. Like I said, the culture's great, but don't make an idol of it.
The Melkites have been around since the 1700s; I imagine everybody in Syria knows the Melkites are Catholics. Syrian Byzantine Christian families identify as Melkite or Orthodox.