You know, it's really stupid to be reluctant to walk into an Anglican church to attend an Anglican service simply because I'm not Anglican and during the service someone will shake my hand and grin at me oh dear god the horror! Torontonianitis: the pathological state of being a Torontonian.
(But I *liked* the days when they let you skulk in the back pews and just listen to the music, dammit.)
Somehow I didn't cotton to this when I was reading 12K five years ago, and certainly not when I was watching the anime err whenever that was, but the reason you have different kanji for king's/ kirin's name and country name isn't entirely 'country's precious forbidden name kanji, therefore use a homonym'. That may enter into it, I suppose, but I think it's more that the king/ kirin and the country are different entities. You call the king after the country, yes of course, but you wouldn't use the same kanji because that implies the king/ kirin and the country are *the same thing*. And of course they're not.
Somehow this is perfectly clear in my head while reading and oddly difficult to express otherwise.