Lots of valid points here. I must admit I am quite... unsure about adding things to the Scriptures by players, for the reasons pointed out here. But the possibility of creating a thread somewhere were we could discuss OOCly the new contents, generate some feedback and with it also create a point on where we could all agree would probably be an useful tool.
There is another road as well. People usually like to quote things from the Scriptures, but most amarrians haven't read them, and certainly none out the TC has read them in full probably (maybe with the exception of characters that are theologians, like Archbishop). But in any religion there are many more sources: theology books written by theologians, letters left behind by saints and patrons, etc. Those are not Scriptures, and thus people can agree or disagree with them without direct conflict on who's necessarily right. Take for example the medieval theologian writings and compare them to current ones and you'll quickly see many points in difference within the Catholic faith, and yet none of them "negate" each other because they are not the Bible (which, by the way, also contradicts itself more often than not).