I remain convinced that far more points away from the Byzantine Empire than points towards it, and I will only accept it as a "primary" inspiration of his for Gondor if a "confession" of his in writing is found.
I mentioned the possibility above that JRRT might have taken very varied sources for what he wrote, that in retrospect seem to "tick all the boxes" for the Byzantine Empire, while any of the possible sources would fail to do so. Aldarion considered that to be unlikely. Well, I've got news for you. Even if something is statistically improbable by 90% to 10% (or even in lottery ticket improbabilities going into three-digit millions), the 10% can still happen. As "intuitive statisticians", we humans are about the dumbest species in the world, even ants are better. And when we believe we have found a "causality" (something we seem to have a massively neurotic need for), we start taking notice only of what confirms this. There is perhaps nothing more daft that humans' "ability" to recognize "faces" where the similarity for "non-believers" tends towards zero. We're not nearly as smart as we think ourselves to be. We desperately search for "causality" and believe to find it far more often (by orders of magnitude!) than dispassionate observers would nod to. We are less hungry for "correlation", which seems to confuse many of us. And we just absolutely hate "coincidence", even though it is the 9000-pound gorilla of the three, dwarfing the other two.
I mentioned the possibility above that JRRT might have taken very varied sources for what he wrote, that in retrospect seem to "tick all the boxes" for the Byzantine Empire, while any of the possible sources would fail to do so. Aldarion considered that to be unlikely. Well, I've got news for you. Even if something is statistically improbable by 90% to 10% (or even in lottery ticket improbabilities going into three-digit millions), the 10% can still happen. As "intuitive statisticians", we humans are about the dumbest species in the world, even ants are better. And when we believe we have found a "causality" (something we seem to have a massively neurotic need for), we start taking notice only of what confirms this. There is perhaps nothing more daft that humans' "ability" to recognize "faces" where the similarity for "non-believers" tends towards zero. We're not nearly as smart as we think ourselves to be. We desperately search for "causality" and believe to find it far more often (by orders of magnitude!) than dispassionate observers would nod to. We are less hungry for "correlation", which seems to confuse many of us. And we just absolutely hate "coincidence", even though it is the 9000-pound gorilla of the three, dwarfing the other two.

