Devout? No, not at all. As for being a 'Greek cultural enthusiast', to a degree, I mean I am quite fond of the classical Greeks, their philosophy, their thought. As for later Greek culture, I like it, but I could live without it; in this case what I generally advocate isn't so much Greek culture as the supremacy of Constantinople. Look at history, the Church started falling apart only during the last days of the Empire, if the Church is to survive in any meaningful manner it needs unity under Constantinople...whether or not the Church should survive in a meaningful manner is another discussion entirely.
In the end I'm primarily a cynic.
Survive? The Church is doing quite welll. Constantinople......
If Greek thought was so great, how did the Church take over?
Falling apart? The Church is very much together, so I don't know what you are talking about in the Empire's last days.